Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca694b80256693e…

MALICIOUS

PDF

73.6 KB Created: 2021-03-23 03:15:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03ef88fb2426238303dec3af98612942 SHA-1: e18f7263cae10f4915c580e83c48538f11759d5a SHA-256: 9ca694b80256693e0f4eb6e307f87e7ce43f61cdd21db91496b3c8716c14d6d5
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm designed to generate SEO traffic. The primary URL, 'https://mezovuduw.ru/award?keyword=majesty+planetshakers+chords+pdf', suggests a lure to a malicious site disguised as a search result. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/award?keyword=majesty+planetshakers+chords+pdf
    • http://vasizazesunof.medianewsonline.com/que_es_el_alquitran.pdf
    • https://lomimasexoguxi.weebly.com/uploads/1/3/4/7/134736135/gafel.pdf
    • https://cdn.sqhk.co/tazifawixax/hbtieFa/78409486254.pdf
    • https://cdn.sqhk.co/kidimezamos/KijXxic/evacuees_meaning_in_bengali.pdf
    • https://cdn.sqhk.co/fujotojaxob/7geEgjj/sizosufiwili.pdf
    • http://juxowupekabaf.mygamesonline.org/jutafolikabogomasenes.pdf
    • http://sawedes.mywebcommunity.org/my_pet_warehouse_dog_toys.pdf
    • https://cdn.sqhk.co/livejizilul/ZiehdCQ/7558030220.pdf
    • https://notilapixoto.weebly.com/uploads/1/3/4/3/134397855/18f5c1a97.pdf
    • https://cdn.sqhk.co/saxamabewido/hjafhne/zig_zag_2.pdf
    • https://pafililesenuxag.weebly.com/uploads/1/3/5/9/135964876/4354273.pdf
    • https://cdn.sqhk.co/peretudiwi/jgYidjh/4108842570.pdf
    • https://cdn.sqhk.co/lerapuraroke/ggeKhj2/funny_gift_ideas_for_coworkers.pdf
    • https://wolofineso.weebly.com/uploads/1/3/4/5/134598063/wagem.pdf
    • https://cdn.sqhk.co/xerolunem/cVheXyb/animatic_by_inkboard_download.pdf
    • https://cdn.sqhk.co/vizelupavew/jiaHMhj/cara_membuat_storybeat_instagram.pdf
    • https://cdn.sqhk.co/xuwadezab/LmhojbT/war_and_order_castle_requirements.pdf
    • http://pexarinolal.mypressonline.com/effects_of_audio_visual_aids_on_learning.pdf
    • https://cdn.sqhk.co/gepumenujeme/jicqgcZ/star_trek_fleet_command_ships_upgrade.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gajabedafot/father_christmas_letter_writing_template.pdf
    • http://lugifer.onlinewebshop.net/44240980221.pdf
    • https://s3.amazonaws.com/dupula/guidelines_cpr_2015_aha.pdf
    • https://s3.amazonaws.com/zamuriza/trauma_abdominal_penetrante_2018.pdf
    • https://s3.amazonaws.com/polexebuj/accountant_cv_template_free.pdf
    • https://s3.amazonaws.com/retisovojor/66225159161.pdf
    • 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_off0000e2b4.bin
eecc59e6e844a31fe6a9cebc5aa2122fa2eb42a64cbb9dfc3aaf2efc1f43a83c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B4 5492 bytes
font_01_sfnt_off0000f578.bin
80769c4d6f7081ed22a86bfc6dd9fa9c27711e07f3891b23bda2d0a38301c451		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF578 10204 bytes

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