Malicious PDF — malware analysis report

Static analysis result for SHA-256 99a5d8e995390321…

MALICIOUS

PDF

76.6 KB Created: 2021-03-20 21:59:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c0f466361f2e0205bef890f01cdc74b0 SHA-1: e7efc80da49daf1c4f1c2e0493e72dda5f8eb500 SHA-256: 99a5d8e99539032103656eaef05cce00bc04916cab64a76f3ba0a3f44c2e6b31
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'lozipotod.ru', which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a '2004 honda fourtrax 350 service manual'. No scripts were extracted, but the presence of embedded URLs and the overall detection profile strongly suggest a phishing or malware distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/strik?utm_term=2004+honda+fourtrax+350+service+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461204/normal_5ff14c5141d84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388183/normal_5fe60179669bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_6005de2c561cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386829/normal_6018232992ab2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495244/normal_60071b4d67c2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_6041f45f102da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5fd0b164331c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_60266a9b5197e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494661/normal_5ff0e74ba6a52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413008/normal_5fd308b7c2fb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369507/normal_5fffcb5b374b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413468/normal_6052b4911bb94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379485/normal_5fd0ed6a95cab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374963/normal_602aaa9d9c4ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_60450725abd4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403673/normal_5fc8ddcd8dc2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410462/normal_5ff489fdc8948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381730/normal_6032cf67bef5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408319/normal_604d2ccaa0362.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
    • https://uploads.strikinglycdn.com/files/32ddb5e9-62a8-4540-9fc0-657951bfacc5/international_critical_commentary_matthew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b60544-6050-4971-80ec-0cac18ae4a79/vapagabaza.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/wilderness_survival_course_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/is_stihl_the_best_chainsaw.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_off0000df37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF37 5828 bytes
SHA-256: 16d4496fcfc5e17e3d248519531afbbb84c737f0636c30f88d5c09c8c1a7fd86
font_01_sfnt_off0000f2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E2 10632 bytes
SHA-256: 0ea63626e80f20ec88bf71602f540a619b791c65cf5a17956fbb1f6708b596a4
font_02_sfnt_off00011601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11601 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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