Malicious PDF — malware analysis report

Static analysis result for SHA-256 314c5dd5c536870b…

MALICIOUS

PDF

67.7 KB Created: 2021-01-03 03:12:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72417aac78234fa371fb7c96e2475c58 SHA-1: b18b43550204a82bacb203d963c406d4bad62f15 SHA-256: 314c5dd5c536870b30fc98bcfad9ee704ca2c5ffbfbe5b26b11864db06dfb5f0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to a phishing site, likely using embedded JavaScript for obfuscation or redirection.

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://trafficel.ru/aws?utm_term=banco+votorantim+s.+a.+annual+report
    • https://static.s123-cdn-static.com/uploads/4501645/normal_5fdeb45cd6af7.pdf
    • https://cdn.sqhk.co/xeposetuge/hh7ihc3/80911594706.pdf
    • https://static.s123-cdn-static.com/uploads/4444104/normal_5ff036c027059.pdf
    • https://cdn-cms.f-static.net/uploads/4392659/normal_5f91516404271.pdf
    • https://cdn-cms.f-static.net/uploads/4454977/normal_5fbf135249945.pdf
    • https://cdn-cms.f-static.net/uploads/4454545/normal_5fbf62a37c078.pdf
    • https://static.s123-cdn-static.com/uploads/4386091/normal_5fe10b94d1b20.pdf
    • https://cdn-cms.f-static.net/uploads/4466367/normal_5fd24de021f22.pdf
    • https://cdn-cms.f-static.net/uploads/4465709/normal_5fd3b5ed346cb.pdf
    • https://static.s123-cdn-static.com/uploads/4385852/normal_5ff088b099aec.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/13a83451-cd16-4b45-9d07-99c0e86f5e2b/boveketodiwabaruvonowel.pdf
    • https://uploads.strikinglycdn.com/files/e1f057a2-164b-44e1-91a5-52dd9ded18dd/red_sunglasses_for_chickens.pdf
    • https://uploads.strikinglycdn.com/files/a7f423a2-28e9-4c9d-9aa2-a7c57ce70371/physics_ee_topics_mechanics.pdf
    • https://uploads.strikinglycdn.com/files/329e3594-32c0-4a03-9440-1c3e9c60653f/la_magia_del_orden_marie_kondo.pdf
    • https://uploads.strikinglycdn.com/files/baf7e396-38ac-4113-9d45-8dbcdb217b5e/the_bramble_bush.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbdf.bin
70ce61847e8bde8673fb4a2b58a3c47471a6da70c3273420420e3737644ff9e0
pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDF 5220 bytes
font_01_sfnt_off0000dd98.bin
ee91eb0b60bbc1d8344b709e0d001a9fe8173df7ca7281c3c1d0ea8766ccfae5
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD98 10584 bytes