Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4a2a32e9fa077e…

MALICIOUS

PDF

75.6 KB Created: 2021-03-04 17:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 014942e67c38b9fd4d2ef6d86cef147f SHA-1: 6fe3b15f8578c42eead1480543bb5062e55c25a7 SHA-256: 9d4a2a32e9fa077ecf42d858ee94002ec60190fb47e7d1def5edef9ece36538e
186 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing or trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content or redirect users to phishing sites. The primary URL observed is related to traffic tickets, a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xajibur.ru/wix?keyword=nj+traffic+ticket+court+appearance+required PDF link annotation
    • https://mafaredoli.weebly.com/uploads/1/3/2/6/132695491/6321234.pdfIn PDF document text
    • https://kezobonuduwu.weebly.com/uploads/1/3/4/4/134457579/mujizugadobalap_nimapa_vapafap.pdfIn PDF document text
    • http://biomanua.website/legadoranirhzyl7.pdfIn PDF document text
    • https://xoxigukot.weebly.com/uploads/1/3/4/8/134861038/bilimafu.pdfIn PDF document text
    • http://storeplus.info/computer_all_full_formfbgta.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/jd681kA/13343424757.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/9Oohi0g/quizzclub_family_trivia_game_with_fun_questions.pdfIn PDF document text
    • http://sedazesuv.iblogger.org/zelasejogivowiferamapalar.pdfIn PDF document text
    • https://cdn.sqhk.co/jonuwezipagi/eqpaTij/age_of_conquest_world_apk_1._1._1.pdfIn PDF document text
    • https://rapalavosifezo.weebly.com/uploads/1/3/4/8/134886177/b4fff7f26ed.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/hdmjiic/tanavozufijiwaxoropuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e12aa61-ce9e-4559-9740-3a88e6bc7c7e/pifatavewepibix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b16610d9-5908-4da8-bd79-b1cc39d85ebd/17815682334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f2a34a-0d11-4c48-8512-30359b16f5a5/zexufufosuvibosisutotub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73b8ab0a-1e6c-4ccf-8040-bd619f1fcb9d/gibukabobafurelakiv.pdfIn PDF document text
    • http://wupewujivijulo.epizy.com/pudizefuwu.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_off0000ed1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1C 5172 bytes
SHA-256: a2d6c4d342ae23bd6fca7e717c51306ef375bee1e54d5cf09cc8808421c36703
font_01_sfnt_off0000fed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED4 10080 bytes
SHA-256: bad70e650dc233a929ab1eb804a1ee05b49baca63df7fcf719a9f3d7a2614b2e

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