Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8dc32898687a7e…

MALICIOUS

PDF

87.3 KB Created: 2021-02-27 14:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a0751833851a625150ed8cf298c9904b SHA-1: b0480630a88b2a86e4fb1b3ec724562903d8e684 SHA-256: dd8dc32898687a7ecf9ad5c52ef9be6f52dfaa3c0c3d46f85d7564e31b2cadee
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL, 'https://lozipotod.ru/award?keyword=service+engine+soon+light+on+nissan+maxima', suggests a phishing lure related to vehicle maintenance. Although no scripts were explicitly extracted, the PDF format and the nature of the detection imply potential for embedded malicious JavaScript or other exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=service+engine+soon+light+on+nissan+maxima PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466679/normal_5fd9798d27e3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475730/normal_5fd10177225e7.pdfIn PDF document text
    • https://cdn.sqhk.co/razanifuwuz/dMyoNhf/bawoxidixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_602c57b33cc12.pdfIn PDF document text
    • http://levipek.22web.org/3._4_cycles_of_matter_answer_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420934/normal_5fda557d5a6d6.pdfIn PDF document text
    • https://cdn.sqhk.co/xawefigi/eR3xEDx/fefaxumoworajoweb.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/ieqheYE/10_world_history_quiz_questions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384048/normal_5ff9c36a151d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421214/normal_60051d8022c0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427097/normal_6001f18ded380.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408991/normal_6026c55b84896.pdfIn PDF document text
    • https://cdn.sqhk.co/xelalizogim/iIhdwhb/types_of_antibiotics_for_skin_infections.pdfIn PDF document text
    • https://cdn.sqhk.co/rekosiseweno/EJQhhGm/82116482628.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383795/normal_5febfee35c64f.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/iWXo2gc/i_wish_you_love_lyrics_ann_sally.pdfIn PDF document text
    • http://dobewobezusisof.iblogger.org/net_2018_answer_key_english.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://pelubameta.epizy.com/71334719050.pdfIn PDF document text
    • http://lovusado.epizy.com/tracing_cat_meme_template.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_off0001093e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093E 5232 bytes
SHA-256: e200e79e92fa03f6a35c608a9f3db08d61316aca6c9b7b26a08093cafa65c965
font_01_sfnt_off00011ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ADE 11276 bytes
SHA-256: 32ac68495e80cb66882ee4043f2f2302347861f6ac0302e3b44b793e0e61ccb1
font_02_sfnt_off00014150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14150 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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