Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f44aeae7a966f91…

MALICIOUS

PDF

74.5 KB Created: 2021-02-27 02:20:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4a495b320170919339ce4988961ec3ec SHA-1: b36867a2a94fe8b29fbf5a3efc2e7b01249caa33 SHA-256: 3f44aeae7a966f91d6b5bcf3717219dad7ccced7c66403ac6e7580e1db5ca629
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/award?keyword=el+dador+de+recuerdos+online+pelisplus PDF link annotation
    • http://leledup.mypressonline.com/weight_loss_chart_printable.pdfIn PDF document text
    • http://nigoguno.scienceontheweb.net/17552727337.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/bose_universal_remote_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469645/normal_5fe29c282a5cd.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/UU1wkjj/lupowebipe.pdfIn PDF document text
    • https://cdn.sqhk.co/zojoguxuban/c1gjjgi/x_factor_cannonball_audition.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/legelamesasuko.pdfIn PDF document text
    • https://cdn.sqhk.co/gujadozede/q7vhijc/76121426074.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/ggjsijc/wuwulagaxupotetupus.pdfIn PDF document text
    • https://cdn.sqhk.co/radageroboko/fOjdNia/99292379635.pdfIn PDF document text
    • http://bamefidev.mygamesonline.org/vortech_mp10wqd_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xesogopobatobop.epizy.com/sopikedenepomuxubaxegazo.pdfIn PDF document text
    • http://jokosen.atwebpages.com/red_cards_in_joking_hazard.pdfIn PDF document text
    • http://vedapasu.epizy.com/letolasejudofokuwaxuja.pdfIn PDF document text
    • http://pokezuturev.rf.gd/58111148102.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_off0000e33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE33C 5024 bytes
SHA-256: 509d6ebf0273331b3a50d7da2720b8c6d8145196a455e6261358a864b68a66e4
font_01_sfnt_off0000f45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45D 12160 bytes
SHA-256: 55160b846b46d14f53ac4faf861b928be63f988eb73a72473b783d0accb85068