Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2481bb546f6999d…

MALICIOUS

PDF

71.5 KB Created: 2020-12-24 08:13:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 79ab9f03ba8c3325dbaec33e2bd17966 SHA-1: d83fcb6d98e15d7eba3658f73cbc585d6ee88870 SHA-256: e2481bb546f6999d81a1be1f1415ead17e10cd639346a15e64fdf978033bc5ed
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The embedded URL is the primary indicator of compromise, likely leading to a phishing page or a download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/strik?utm_term=alto%2527+s+odyssey+chromebook PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374536/normal_5f8dd4451cb82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_5fd67dc42275e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480905/normal_5fb8651c679c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416131/normal_5fb96e56e39f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_5fb8d25f4dafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415974/normal_5fadc8b938666.pdfIn PDF document text
    • https://cdn.sqhk.co/ludafojebi/gfjrjjq/fenejenopifavafonitibeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392877/normal_5f9e512c3fa46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486036/normal_5fd1ffb3af1c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_5fd678b62455f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5fae5c2ca08a2.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/fbee27f9-6b1c-4310-b40a-28b9af059663/gibomisobifoguvivimifemo.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD4A 4932 bytes
SHA-256: f6494d8df5fd777768d42fd35588b73ab1029b102ed048f4d4921073fe746198
font_01_sfnt_off0000de1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1C 10816 bytes
SHA-256: ae964dacd6e086cd771beffacf7b399787f0a91e6fc590a46944cb8db884d6b4
font_02_sfnt_off0001034d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1034D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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