Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84b0c236c74ec10…

MALICIOUS

PDF

59.1 KB Created: 2020-11-23 13:52:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 03ec68c1214bde335db99bbc1a3460f0 SHA-1: 97933e71a9bccce8a8514fe4a6e77b191d68ceda SHA-256: d84b0c236c74ec10873841325f9cc3d31e3e0058b51b3091f1831a197bfd3824
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to trick users into navigating to a malicious site, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/123?utm_term=marmot+ajax+2+tent+-+2-person+3-season PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404528/normal_5fa784caa1d70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5f9ea3235bb25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465388/normal_5fb2deca769c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f887c533f539.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459917/normal_5faf35ae9e2bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5f8dd8f5eca32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418197/normal_5f9654069f9c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482012/normal_5fb4726f6100d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381752/normal_5fa2258cb8e1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369324/normal_5f8a437b5b2cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381085/normal_5f92a3e3b72e9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovigebi/vavamem.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/21365751717.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_off0000aa3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA3B 5412 bytes
SHA-256: a110b90256c12448b8ae7226fb84061dd1f1224dfa3b518a8c963433c3b4e21d
font_01_sfnt_off0000bca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCA7 10492 bytes
SHA-256: a62aae7f0f475a2d68d86452dad77fe89b7f355cb8f2747e2aa744c6bf0cb608