Malicious PDF — malware analysis report

Static analysis result for SHA-256 f61e75700dbca219…

MALICIOUS

PDF

74.7 KB Created: 2020-12-30 12:23:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9792270414f7964547cba287f2b10f9f SHA-1: d5bb7b5a3d8f359c3bf692084bb6d7ad8a00c85f SHA-256: f61e75700dbca219d10091cc5d06d90661139b04e062ceee4a2a37c71c5b1a6b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for downloading further malicious content, possibly related to game downloads as suggested by the URL parameters. No scripts were extracted, but the PDF structure and URL are sufficient indicators of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/strik?utm_term=lokicraft+game+download+uptodown
    • https://cdn-cms.f-static.net/uploads/4378383/normal_5f8aa6d850963.pdf
    • https://cdn-cms.f-static.net/uploads/4371806/normal_5fa4162b233ef.pdf
    • https://cdn-cms.f-static.net/uploads/4488809/normal_5fd3af33d77c7.pdf
    • https://static.s123-cdn-static.com/uploads/4455894/normal_5fe124dc208e4.pdf
    • https://cdn-cms.f-static.net/uploads/4402267/normal_5fdbde0ae92ed.pdf
    • https://cdn.sqhk.co/pimidima/gchhhi1/pinagakina.pdf
    • https://cdn.sqhk.co/renapudovi/ighhpjf/56729502051.pdf
    • https://cdn-cms.f-static.net/uploads/4499282/normal_5fb6ed345b780.pdf
    • https://static.s123-cdn-static.com/uploads/4375521/normal_5fe2d15828a98.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dukajevo/caves_of_qud_gog.pdf
    • https://s3.amazonaws.com/jivagajamav/45029826083.pdf
    • https://s3.amazonaws.com/ruzaganog/large_bump_on_top_of_big_toe_joint.pdf
    • https://s3.amazonaws.com/sugaguxagu/68247803571.pdf
    • https://s3.amazonaws.com/jenagubadopi/the_12-_lead_ecg_in_acute_coronary_syndromes.pdf
    • https://s3.amazonaws.com/zugutixe/konica_minolta_bizhub_c227_brochure.pdf
    • https://s3.amazonaws.com/remoxi/agreement_template_for_services.pdf
    • https://uploads.strikinglycdn.com/files/3f7066ae-c446-456e-a150-7ba596905b6e/5._snf_sosyal_bilgiler_anadolu_uyg.pdf
    • https://uploads.strikinglycdn.com/files/8c02c245-894a-405d-904b-7efbe77f1280/trig_functions_identities_cheat_sheet.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_off0000e45c.bin
3189847330ac8fe88dc2ee5fcd5c7b29ef5ca94ed6063664d7f5ae824bcaee7b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE45C 5392 bytes
font_01_sfnt_off0000f6bf.bin
248a76602cf0cf0524fea38e5a0e03b283e157b8ae3256076377c185c912a548
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BF 11628 bytes