Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cc8d39fc3df8f7…

MALICIOUS

PDF

83.2 KB Created: 2021-09-01 15:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2019ca994194591d5907c9aa2af4a216 SHA-1: 26cb288e994ffdd3d4f2e4e4d45b37e4403204bd SHA-256: 06cc8d39fc3df8f70d8c258e3f5512bb39f90ff7524413f708ba83be830e1848
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure strongly suggest an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 https://infrive.ru/uplcv?utm_term=pirates+of+the+caribbean+1+tamilrockers PDF link annotation
    • https://adikkeempat.com/contents//files/zipasulejij.pdfIn PDF document text
    • https://mtmhomeschool.com/mycms/uploadedimages/editorUploadedImages/file/golokalisine.pdfIn PDF document text
    • https://pernambucoimortal.com/imagens/files/zenoziviguzaregulagefisib.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/rotirevatamapo.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090f023584a1---65034173649.pdfIn PDF document text
    • http://nw-line.ru/generic/uploaded/durexunuwajajejotojoxedo.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/tobenutike.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/6553182040.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/jiporugixikamenowoxi.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1606d592adf125---35600379487.pdfIn PDF document text
    • http://pogotowienaukowe.com/Upload/file/68434370025.pdfIn PDF document text
    • http://extracam.es/app/webroot/arxius/file/39143011874.pdfIn PDF document text
    • http://stoewebdesign.no/userfiles/file/89036269729.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609e26c608993---455992512.pdfIn PDF document text
    • https://www.seblocation.com/ckfinder/userfiles/files/3579741.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160ace67a1602b---61014919270.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/d7c5eb0aa27e88aaecfed00d18455fa2/rokululuzulowotigujogadit.pdfIn PDF document text
    • https://tappowine.com/file/21519183049.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/1obkll6b2he76o5ohv45h58gn1/noxew.pdfIn PDF document text
    • http://mvdeastudio.it/userfiles/files/78282681124.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9f512f28b---vilolofijufine.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16100b0407ccae---wulilunudeki.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/01c74d874a4844474fce79e156e60636/66902239200.pdfIn PDF document text
    • 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_off0000dc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC33 18672 bytes
SHA-256: d34df03bb47a7681ccfba2dcbc21680ca255f6e9cd9578e31d6421dda65c923e
font_01_sfnt_off00010d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001255e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255E 10884 bytes
SHA-256: 4d03e68e728a0f2989c87eec3ae810116d41a782e07233a5c486be672305f3e0

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