Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abd4187962c1cb3…

MALICIOUS

PDF

91.0 KB Created: 2021-07-04 01:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: dd7a9c6371d3119753fa7f293ad72f45 SHA-1: 9d2fe530608f23279eb4f1d65837643f3f115b67 SHA-256: 3abd4187962c1cb370304af88a3a924a0530e3223c95bf350a8b37ddfd093cd4
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains a link farm pointing to compromised WordPress upload storage and other domains, suggesting it's designed to redirect users to malicious content. The presence of a 'password-protected archive' lure further supports the intent to conceal malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/ceb3beb2c49a9d02971202e0249251f1/xitemapudiluzinabetezemo.pdf In PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/5c79062cd183f39b0f8fd65d63288e8f/tekuvag.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/wowiko.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bba5e74ba6---zedogutajusikamu.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d2ee2b302---lolevatiriraxi.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/kizutozububegujur.pdfIn PDF document text
    • https://sudhirsachdevaclasses.com/ci/userfiles/files/75118699821.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ddabdb2597---tesaro.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/850cb4739a70e0fce7a15ba46c6d26f3/bozabojiren.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/psl56kpkidcbil09v1n697mv2a/tukizixuxe.pdfIn PDF document text
    • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/zabawututuwusovakezixob.pdfIn PDF document text
    • http://shreejians.com/userfiles/file/ribevutisuwe.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16084049e68bf7---nakiponadavorizufupe.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/purevu.pdfIn PDF document text
    • http://unsersohn.ch/images/file/51838299346.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077dc30c4455---zirivexotuvo.pdfIn PDF document text
    • http://mai-colle.jp/userfiles/file/52531642950.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/af5b53b47cbb7d710a56329587c4e4f8/pitutonifurebe.pdfIn PDF document text
    • https://areicon.com/images/file/42931817355.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3535b8f30e---sagixoza.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/b0a5f0ca794d46aaddcbaec815380ea4/32174430315.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/52683109b720b917f21f6e8265430a3e/rejuwobejuwegi.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d877913dd---62384639641.pdfIn PDF document text
    • https://consultingexpert.eu/fckeditor/userfiles/file/joxexima.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/fd2ad84e5d0d14b01e45c91e5e692211/sepavut.pdfIn PDF document text
    • https://southwestlooms.com/admin/userfiles/files/feridagamenepofaxisozadex.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///53946260150.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=after+effects+2020+crack+macPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC4 29704 bytes
SHA-256: a20c7220729c9277dedc0b0bd19b537484794e926391bc4cc0423885a650941c
font_02_sfnt_off000144ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144AB 10452 bytes
SHA-256: 214e39afa854581b05ee4bcba6bc28378a9d34b845c7dee9380524df0e9b50dc