Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4397934fa962c94…

MALICIOUS

PDF

79.7 KB Created: 2021-03-01 22:41:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ea1f291a36ec5ef5636574940dd7af0c SHA-1: 9f778b097ae4469795dcfff4858a09bf7144fe42 SHA-256: e4397934fa962c9452a6f9ad3a5198c04b08c8a640b73b07fa6f820ffe628d54
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML and ClamAV, and exhibits characteristics of a phishing lure. It contains numerous external links, including one pointing to 'lozipotod.ru' which is presented as a download for an Xbox controller driver, a common social engineering tactic. The document's structure and the presence of many links suggest it is part of a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/123?utm_term=xbox+360+controller+driver+windows+10+wired PDF link annotation
    • https://lafefetakizin.weebly.com/uploads/1/3/2/7/132712235/ruwaxuxobibolubopago.pdfIn PDF document text
    • http://topcreditmonitoring.info/fair_work_abandonment_of_employment_templategi6gu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390328/normal_601c6fc25ae31.pdfIn PDF document text
    • https://cdn.sqhk.co/vujaderaz/gcOjcw6/wutijavawibopizedopug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382952/normal_5fc662efc2d0f.pdfIn PDF document text
    • https://vimasideb.weebly.com/uploads/1/3/3/9/133997972/bupawikufanaje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501057/normal_6000b6ec10a84.pdfIn PDF document text
    • http://mjawebdesign.net/pidezap1ciu.pdfIn PDF document text
    • https://resevaguwitim.weebly.com/uploads/1/3/5/2/135298688/mexigumumeziv.pdfIn PDF document text
    • http://goossyy.online/every_breath_you_take_acoustic_tabruon7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418167/normal_5fe9ad4fc27ba.pdfIn PDF document text
    • https://gawufuxawejax.weebly.com/uploads/1/3/1/8/131855981/geledajidunu-mizefef-zogizok.pdfIn PDF document text
    • http://jelabenix.22web.org/boniw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387918/normal_60074c955e73a.pdfIn PDF document text
    • https://jefiwoso.weebly.com/uploads/1/3/5/9/135996081/defodekuju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475215/normal_600890989286e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://difesasud.epizy.com/48922961842.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 5360 bytes
SHA-256: 69727f5c661bc1957ac09bf9b43099fee72aef5ef2cf46950a51851c889a4ed7
font_01_sfnt_off0000ffce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCE 10320 bytes
SHA-256: d2e36edbf460e37e3c0ac8527c1f5e6830b99600795cb7a00cb039f93cef22b9
font_02_sfnt_off0001233c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1233C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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