Malicious PDF — malware analysis report

Static analysis result for SHA-256 27874efb3dd942e7…

MALICIOUS

PDF

66.1 KB Created: 2020-11-20 23:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 33f26a5ab6ada7d42630d3e1185f6614 SHA-1: dd4ae9d699d6fbc21b0495d30e2e13e9c3a38755 SHA-256: 27874efb3dd942e7f73cfdcca153301f780cf29cced30b30c1faf59c7147b4cb
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/123?utm_term=mccall%2527s+haunted+farm+directions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5f9a6a7ae1ffe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475397/normal_5fb62b6257552.pdfIn PDF document text
    • https://bizowubojixix.weebly.com/uploads/1/3/4/2/134265373/7404486.pdfIn PDF document text
    • https://tibesegekor.weebly.com/uploads/1/3/4/4/134495245/biwilubukaroxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368732/normal_5f89ffc1710be.pdfIn PDF document text
    • https://bepopasexib.weebly.com/uploads/1/3/4/3/134356469/pifawat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d50caf-e994-47cb-94e5-abd5e9a38432/monument_14_sky_on_fire_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/87398875145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cc94488-5b6e-4878-9f76-8e7308ece3a5/rogaremowevizok.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/download_ispoofer_pogo_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/kimoweworape/69655022034.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A7 5300 bytes
SHA-256: dd26f829db1f44e375e478e84bb00dff335a6cf063bb9176e9f08dc0532b6d26
font_01_sfnt_off0000d794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD794 10568 bytes
SHA-256: 73684e6f2c3e13bf0351ec5e3e828faf5bb48cb93c07063e7bee9b3793a7266d

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