Malicious PDF — malware analysis report

Static analysis result for SHA-256 cede5684820fa4f0…

MALICIOUS

PDF

91.3 KB Created: 2021-07-14 03:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 1bae24c8223660cb28d043ff0c9b7903 SHA-1: 0dae6f505a2fc9c715500ab066932221189b8965 SHA-256: cede5684820fa4f09d8f0205622e743515dbf54773a3230c1c8a9e54c965e22f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous URLs, many hosted on compromised CMS platforms or disposable domains, suggesting an attempt to direct users to malicious content. The presence of these links indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/75132405088.pdf In PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a1022f47ba8---95584388179.pdfIn PDF document text
    • https://senhewood.com/d/files/91107135103.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160804deb1cb41---pipuremuzamezekep.pdfIn PDF document text
    • https://landatur.com/files/galeria/files/53820690902.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/726caf341a7370c66d4ba040a6e2451f/42037615391.pdfIn PDF document text
    • http://broadgatecapital.com/userfiles/file/bumunoda.pdfIn PDF document text
    • http://jhsclassof63.com/clients/c/c8/c8cc7cee7579ddcd469b669c0eb172d8/File/kujexobuxoduvinetujefuma.pdfIn PDF document text
    • https://bilalyapidekorasyon.com/userfiles/file/sesisivo.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/a97429db5192e62e5eb3169100205a12/poxar.pdfIn PDF document text
    • http://bungefamily.com/clients/5233/File/gugisewelinima.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1608a21d64ac12---80012191013.pdfIn PDF document text
    • https://nestaerospace.com/uploads/file/29917381625.pdfIn PDF document text
    • http://linkingpeople.info/userfiles/file/69592897336.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/vko2ri4c7sdmjlfpfg100706k3/11619711889.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/3f0d006cdb37fab984548863850f9d92/33990066230.pdfIn PDF document text
    • http://mobilenmr.com/files/files/93939175704.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/46po9qiif19clq6avvvi9ds486/36828506250.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b45d40a98---50952450558.pdfIn PDF document text
    • http://tantex.org/tantex/tantexuserfiles/file/52423201634.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/sazaxikokelixabifag.pdfIn PDF document text
    • http://maduraigarlandshop.com/userfiles/file/piwaburunuxukerefuxow.pdfIn PDF document text
    • http://kaupa.cz/userfiles/file/21030034746.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16095c7c57c697---valunuzowiw.pdfIn PDF document text
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/v8gvqj0jbnabadvjtduj41aduf/36091109256.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/qi5hd7ls3q4otsc1karqac9mto/53695201436.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=how+can+i+drive+if+i+lost+my+licensePDF 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_off0000fd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD87 10892 bytes
SHA-256: 17bdf53c50903d4dea3e41ddb167a0e03a006e70999bc89f7e8e14dafb4e8d61
font_01_sfnt_off000116cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EDE 17956 bytes
SHA-256: b8633d09e3b3ba0e80edec8a451235689026e9bcdcd73e4f97c871206e0347f6

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