Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4d34c6c96f3f7d…

MALICIOUS

PDF

77.8 KB Created: 2021-03-02 17:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 86ff0a8248fc76b3c92730b8aee0fc70 SHA-1: 88a6c4522a9497c1149abca24b0631c979f79c2d SHA-256: 7f4d34c6c96f3f7d1315de76993cbd29a571a0ba28f0ea4f172b66c077bb3d3a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure.

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://lozipotod.ru/strik?utm_term=what+is+usability+in+health+information+systems PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420239/normal_6028b5fcb093a.pdfIn PDF document text
    • https://cdn.sqhk.co/noxuluni/eqXbgjn/taxafaxer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388163/normal_5fd9e0118672e.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/what_are_other_words_for_left_alone.pdfIn PDF document text
    • https://cdn.sqhk.co/forinabam/hwbvxhb/78810090211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422367/normal_603b46ad3132e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486965/normal_60038b6ecc916.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426696/normal_5fee8b92b4bb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450418/normal_5fe545c2087e1.pdfIn PDF document text
    • https://cdn.sqhk.co/bukevexej/ijTib1l/64875932037.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445531/normal_5ff76421187bc.pdfIn PDF document text
    • https://cdn.sqhk.co/talurelope/ijcGid6/train_to_gensan_mod_apk_happymod.pdfIn PDF document text
    • https://cdn.sqhk.co/fusulelibev/YOEBcdt/99243028606.pdfIn PDF document text
    • https://cdn.sqhk.co/torazanopuni/iPQdjfO/wijirezavafijosejezenosam.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/is_elevated_blood_pressure_safe_when_pregnant.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377912/normal_6008cd47048d1.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/wopari/fasizagikeni.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/google_bypass_apk_for_zte.pdfIn PDF document text
    • http://zotubune.myartsonline.com/30184614194.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_off0000f46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46F 5260 bytes
SHA-256: 9b3a0801a4bfe6b7567dc341aab0b85c8a26fec328e6f92adea71504c4fa4320
font_01_sfnt_off0001063e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063E 10560 bytes
SHA-256: fc258b227a645618cf90c78160cd59fb70ff66f5151ecfaa6145accef7ab41a9

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