Malicious PDF — malware analysis report

Static analysis result for SHA-256 066038f177b6fa98…

MALICIOUS

PDF

158.4 KB Created: 2021-04-02 16:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 184162d503352c7da807cf1c44824b6e SHA-1: 7e26a69a081c281b94921244f17aca5b954b4eeb SHA-256: 066038f177b6fa982c1e40c53930dafaf8ed9b8fad4fe0c8e641a242ebcc1d60
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a phishing lure, attempting to trick the user into visiting a compromised website. No scripts were extracted, but the PDF structure itself contains malicious elements.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://zajinet.ru/wix?keyword=wordalot+answers+professional+pack+1
    • https://cdn.sqhk.co/fobonelaga/8DgjZou/espn_fantasy_football_mock_draft_12_team_standard.pdf
    • https://cdn.sqhk.co/niporatibu/gjbyjji/48808038132.pdf
    • https://cdn-cms.f-static.net/uploads/4413370/normal_5fea3b95d5651.pdf
    • https://cdn-cms.f-static.net/uploads/4460946/normal_604889f09acbd.pdf
    • https://cdn-cms.f-static.net/uploads/4445130/normal_6011fcd888774.pdf
    • http://plsale.pro/wazumbwcm4.pdf
    • https://cdn-cms.f-static.net/uploads/4372721/normal_60321c3a63ee1.pdf
    • https://volorizog.weebly.com/uploads/1/3/1/0/131070051/1500086.pdf
    • https://cdn-cms.f-static.net/uploads/4491148/normal_6045bd73171c0.pdf
    • http://dreamingdeveloper.com/letra_del_himno_nacional_mexicano_en_nahuatl_y_espaol_completolxxde.pdf
    • http://lnstagram-verifedbadge.com/bakugan_games_for_androidaf6j9.pdf
    • https://cdn-cms.f-static.net/uploads/4445881/normal_602191e85831e.pdf
    • https://cdn-cms.f-static.net/uploads/4467945/normal_603f0b63d2007.pdf
    • https://tawuvumiru.weebly.com/uploads/1/3/5/3/135326103/timivo.pdf
    • https://cdn-cms.f-static.net/uploads/4484834/normal_60407db1c7985.pdf
    • https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/kidamoxo.pdf
    • https://cdn.sqhk.co/pobopuwubox/hjbhbia/solitaire_online_spider.pdf
    • https://static.s123-cdn-static.com/uploads/4380681/normal_5fc7f53153ad4.pdf
    • https://cdn-cms.f-static.net/uploads/4403121/normal_5fe6be971b752.pdf
    • http://polfact.site/farm_heroes_super_saga_appleuzh97.pdf
    • https://cdn.sqhk.co/vulovosovem/cuRTrge/equalizer_bass_booster_pro_pc.pdf
    • https://cdn-cms.f-static.net/uploads/4462362/normal_6043885cdc6ea.pdf
    • https://cdn-cms.f-static.net/uploads/4418984/normal_60198b7dcc93b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023543.bin
4be59fa0889c8c8aba1802b871f136560b87adc06bc28778d48559236e250bfc
pdf-font-stream PDF embedded font (sfnt) at offset 0x23543 5368 bytes
font_01_sfnt_off000247b7.bin
dad2c4addb6c20e935eea38888d915897833ca515ba432b3eb11cb7a63d7a250
pdf-font-stream PDF embedded font (sfnt) at offset 0x247B7 10524 bytes