Malicious PDF — malware analysis report

Static analysis result for SHA-256 06503aea25a56e2a…

MALICIOUS

PDF

66.4 KB Created: 2020-11-29 19:22:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5b9575b8c3145fb3a5a1d170e23b976d SHA-1: 1d161fc151f659a7d59fa1251626d5448c6fd98d SHA-256: 06503aea25a56e2a048adafd74bc311488745702b49fdaaf087042bbe6adecd4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to direct users to potentially harmful websites. The ClamAV detection and ML classifier strongly indicate maliciousness. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or SEO manipulation attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=imperium+in+imperio+in+english PDF link annotation
    • https://kexazupaxi.weebly.com/uploads/1/3/3/9/133997339/rugezav-wuwatare-zasikamerexe-vuzitizeda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387581/normal_5fa0cd4751295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403680/normal_5f91ac9c35d57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481985/normal_5fb7a19783f49.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/f0d9a55053e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472494/normal_5fadf345027d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402710/normal_5f9e046e54c36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374853/normal_5f8930a737a7e.pdfIn PDF document text
    • https://turakenedonatup.weebly.com/uploads/1/3/4/6/134610331/2664121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385207/normal_5f9c7c4b8a396.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://uploads.strikinglycdn.com/files/48b12675-8f9f-4f31-9763-165eac25eb4f/nojemawetolizexokozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb97f7a8-7ad0-4ec9-9d2c-c023a15ee110/another_word_for_relaxed_person.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd4f6106-983d-4131-a81e-fa95ec4268e7/collect_the_visitor_recording_in_starry_suburbs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dccb2c36-039f-44c7-9913-1e397b5048cb/89921693958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0d13dd4-455e-4426-9091-01ce36c9b67d/2370250485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10680b12-666d-4df9-8e7a-b7edfac2c2a0/38479121415.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_off0000baa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAA6 4760 bytes
SHA-256: 1ca80f06718854d757da1c092c412f02042c884851ea59253d06641f351d6edd
font_01_sfnt_off0000ca96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA96 10700 bytes
SHA-256: 1a515e4a2a523492ba2526125f8b132e490434f3a57a80b33d279392113a9166
font_02_sfnt_off0000eec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC2 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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