Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c81b4e6eb25f42…

MALICIOUS

PDF

66.7 KB Created: 2020-12-20 19:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5faa7cc2255b74350aa806ff32d8ea93 SHA-1: affef52db77fe96c1c090d0cf9d1f764c6076e84 SHA-256: f7c81b4e6eb25f421383d77785ee6ea721d546cde075ca77b4fe1d369bdf3520
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely intended to host phishing content or a further payload. The document body, though heavily obfuscated, suggests a lure related to product information, consistent with phishing or scamming tactics.

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/strik?utm_term=roof+cross+bars+for+jeep+grand+cherokee PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403117/normal_5fc847d3550d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5f8d1bb2d8ce6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_5fbf65c87dd16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473415/normal_5fd3cd6f1215f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_5fb34da9baa7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389820/normal_5f979deba04c5.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/piradi/cardcaptor_sakura_episodes_english_dubbed_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc676cd1452f90b7f0b4806/t/5fc7137d8f07963615722b38/1606882173797/lucky_for_life_numbers_colorado.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/bow_master_mod_apk_unlocked.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/laxuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26064a24-09c0-40ec-afce-9a3a1cf5bb09/33799260672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81cae8e1-216f-4940-ba96-94deb7441646/gelofat.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_off0000c6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F6 5672 bytes
SHA-256: 76ed2c7c1403ed92c08a4cde2bdfefecbc16c8d4828a73f6b39d3d79af751642
font_01_sfnt_off0000da48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA48 10576 bytes
SHA-256: b33cb7d5975e5346502b9a84aeb01cf05422ce070dd7df90c1f1e78bb4d4b31e