Malicious PDF — malware analysis report

Static analysis result for SHA-256 60733bd691a9864c…

MALICIOUS

PDF

82.5 KB Created: 2021-03-27 19:36:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 212303d1fec2c88903478872d94e8ee0 SHA-1: 576760c8a904055b97e6662393e1725a33a9d678 SHA-256: 60733bd691a9864c5126dd15c177ecc1e483fa8d4eb8f945add07cb31a38d906
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning model assigned a high probability of maliciousness. It contains a large number of external links, including one pointing to 'mezovuduw.ru', which is likely part of a link farm or phishing campaign. The document body, though heavily obfuscated, contains keywords related to money laundering, suggesting a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/123?utm_term=report+money+laundering+anonymously+uk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473902/normal_6039eb231e7d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469386/normal_601b80ce33d40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405186/normal_5fd1f003bf77a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476288/normal_5fd2a8a325c53.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vanatul/ginefiteruleloxomabo.pdfIn PDF document text
    • https://08f84d9a-a880-4217-b4f3-956a60fe6fc5.filesusr.com/ugd/b3318b_762eb68a96b04081b555cc3183cc2c1d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcab8fd7-5011-4773-b324-84a47599c639/a_and_b_are_van_der_waals_constant_for_gases.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e231012-8385-495c-af9f-093466a4074d/shark_navigator_swivel_cleaning_instructions.pdfIn PDF document text
    • https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_87d3ea765f6c4499929de478ff579c28.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dotivaf/vezikemuganudoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/autocad_2016_mac_student_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9973dfe9-ab36-4cae-bb6b-a3c60cf06008/27196243776.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/casperjs_big_file.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/puxiralasegoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75628964-3307-4bc0-8fc4-6f5c5610331b/ashrae_2008_handbook.pdfIn PDF document text
    • https://b5526579-b22d-45a0-8251-9885a72cf3eb.filesusr.com/ugd/0cd019_67146c72eae54c8da1cb49e6820416a3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/waduzirader/17786034919.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/unicorn_birthday_invitations_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/jepijazenudemuvilolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef5059ea-21a6-4e1a-a002-8bf4ea9daa0d/51049370843.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF537 5332 bytes
SHA-256: 9abda38fdfd967595ba3b19497e2089b88f76967b0143bcfcaac3cfc4e77b495
font_01_sfnt_off0001074e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074E 11448 bytes
SHA-256: eb300e63c8711018df3f927c9683e56f196376550bd7ff99e474767873c3d55d
font_02_sfnt_off00012e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E28 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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