Malicious PDF — malware analysis report

Static analysis result for SHA-256 3327f5d4fbf8ec58…

MALICIOUS

PDF

79.9 KB Created: 2021-01-22 13:37:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: aedf65f899353037b1b1160fd23aa411 SHA-1: 72e30cff8686e8a2f558b2dcf645d02a5f78cce5 SHA-256: 3327f5d4fbf8ec582df8c2c699268246e245d2d9e3958af988195721be3b84db
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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/aws?utm_term=french+to+english+oxford+dictionary+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367923/normal_5ff92ee42c1a8.pdfIn PDF document text
    • https://site-1189736.mozfiles.com/files/1189736/punto_de_fusion_de_la_acetanilida.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/0Nhdtjh/dikazupudulavak.pdfIn PDF document text
    • https://site-1172122.mozfiles.com/files/1172122/allegiant_customer_service_hours.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499329/normal_60046fb4b086b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379222/normal_5fc7c5d7485ba.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/pjhRjdL/vebetetugiledusotinozori.pdfIn PDF document text
    • https://cdn.sqhk.co/gebemiwisero/heijfIh/12371170992.pdfIn PDF document text
    • https://raguwagoneneza.weebly.com/uploads/1/3/1/3/131384547/7308588.pdfIn PDF document text
    • https://bativizamazon.weebly.com/uploads/1/3/4/7/134770744/b2f827cc398.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/idhihgw/linear_pair_angles_are_congruent.pdfIn PDF document text
    • https://cdn.sqhk.co/xolokenuw/BhBnhi0/xelowebasepe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427295/normal_5fe33743643e7.pdfIn PDF document text
    • https://jofukesor.weebly.com/uploads/1/3/3/9/133999831/8554765.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/nevovumowa/ananya_birla_better_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/personal_cv_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/bewudumesomijim.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/vyprvpn_premium_apk_2019.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_off0000f8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D6 5408 bytes
SHA-256: 08317b882551e40bf294c6343b3a82d6e83932b7b30c5ecd16e8bc1d75d5afb3
font_01_sfnt_off00010b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4A 11540 bytes
SHA-256: 43f4a1d7f3f53dc039ccb70fef5517c1fabf5fd34a72f44130b2c20fcbc85abd

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