Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3bb9fb0ec859441…

MALICIOUS

PDF

72.4 KB Created: 2021-02-13 13:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 537c46df61f855864e79a16d1ef1285d SHA-1: fedba8d132de7b963066389471d5c568d68f3aa3 SHA-256: f3bb9fb0ec8594416354401bdd66c818bd63aebc004b314fc42c3059c3e633dd
126 Risk Score

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
  • 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://jacksth.ru/wix?keyword=j+bus+schedule+new+haven+to+waterbury PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482629/normal_602538382bb62.pdfIn PDF document text
    • http://italiahot.space/sogotito73dlw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_600b10d552c30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_6014ab1d3329f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407316/normal_602197e08577d.pdfIn PDF document text
    • http://hookup671.site/kovotozopruivg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374976/normal_5ff9643bbc38a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375716/normal_5fe16e4e40b7a.pdfIn PDF document text
    • http://it50disconto.info/bombardier_transportation_uk_ltd_annual_report1re9x.pdfIn PDF document text
    • http://zanartcc.net/536264991101dzi.pdfIn PDF document text
    • http://vovpomnim.ru/free_template_cv_creativehj4ov.pdfIn PDF document text
    • http://trysalon.xyz/android_ndk_c_17dhcf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407314/normal_5fe488fd4f2e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408599/normal_5ff13cde80eee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_6021a359ee15d.pdfIn PDF document text
    • http://ufenmac.com/tigubenasovitiri629v.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/vosimalume/deneratafijiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/40089145225.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/pijowogosojirize.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/f-_secure_freedome_vpn_for_pc.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_off0000ddeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEB 5408 bytes
SHA-256: 694bad0ef2d21a52ae98f9c8111a0e35a98d78c6968027fd7077fb160e5caac0
font_01_sfnt_off0000f05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05E 10744 bytes
SHA-256: 4c7cc40456ca0f0fbfdcb5bca87e0c585b294759e63884a92b60254a7e6da2c9