Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d8616daac522b95…

MALICIOUS

PDF

66.1 KB Created: 2021-02-21 06:15:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a5e96f818f9b0803e5fd57985fa190f1 SHA-1: 20b403f31f8b159f3d56d34c67b3256879e869d8 SHA-256: 1d8616daac522b95f3d91da10583f6ec7d1a4eb41f0fbbea739c7761dffd91fd
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure for a game download, which is a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL points to a suspicious domain, likely hosting a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/wix?keyword=street+fighter+5+android+apk PDF link annotation
    • http://d2-club.ru/jesosogugajuwutavadxwxym.pdfIn PDF document text
    • http://itslm.fun/35795485445a90dn.pdfIn PDF document text
    • http://ighelpcenter.xyz/jibuduloxalejogopikbmkf7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450043/normal_5fe17c93b7e2a.pdfIn PDF document text
    • http://circus.market/experiencing_god_through_prayer1ts76.pdfIn PDF document text
    • http://9gusevshop.space/liramaniguxejojuvaxafunu5oo3m.pdfIn PDF document text
    • http://sibuvre.com/what_comes_after_the_knowledge_economy5mig4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/tesapikabalusomowozo.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/2640193082.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/stalker_shadow_of_chernobyl_patch_1._0001.pdfIn PDF document text
    • http://pepajefosub.epizy.com/viva_video_show_pro_mod_apk.pdfIn PDF document text
    • http://mogozuru.rf.gd/kavasibivixigolupu.pdfIn PDF document text
    • http://nalasorujuwasop.rf.gd/churrera_manual_inblan_precio.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/pitch_black_afro_matofotofo.pdfIn PDF document text
    • http://fomariwidodazum.rf.gd/bosch_tassimo_manual_utilizare.pdfIn PDF document text
    • http://muwirosogop.epizy.com/8137828972.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_off0000bf70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF70 5384 bytes
SHA-256: 96f3bd2c4deeb256705562c20b1c2d224ea229385b49930b27a0f53cbd2201ab
font_01_sfnt_off0000d1bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BD 14056 bytes
SHA-256: 146b2fdf04f91f082f56da8c3b198b85108dc62b17b9fdd92c91fad88737dda4

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