Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5086a316b90587c…

MALICIOUS

PDF

79.0 KB Created: 2021-03-01 03:31:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dedeee280e4ee1f14344c60bef33e282 SHA-1: 71c5e49559b9aa9692ded288cf1be48091d6a2a0 SHA-256: f5086a316b90587cacda85835d953417c311d235a93b59baeca749756e399890
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://baarspo.ru/wb?keyword=wood%20joints%20types PDF link annotation
    • https://zunimivivonuz.weebly.com/uploads/1/3/4/0/134017399/045e0d64e4c.pdfIn PDF document text
    • https://kajabukege.weebly.com/uploads/1/3/1/3/131379037/2557617.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471095/normal_5ff96da67a4e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482880/normal_6028151d734cc.pdfIn PDF document text
    • https://doleroxewaforud.weebly.com/uploads/1/3/4/3/134322791/90026865.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/lart_du_menuisier_en_voiture.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422145/normal_5fef0cfc6c9cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dafunidubavilo.rf.gd/rezatakorepizomuv.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/77713093786.pdfIn PDF document text
    • http://malalepotim.rf.gd/48_etudes_ferling_saxo.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/apache_zookeeper_tutorial.pdfIn PDF document text
    • http://vibulowivez.epizy.com/senepofitaxuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/asphalt_8_gameloft_free.pdfIn PDF document text
    • http://dapufojutujat.atwebpages.com/john_deere_sabre_mower_deck_removal.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/33336983459.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_off0000fc5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5A 4804 bytes
SHA-256: 89d4f47c7beedbb2519d42c47f9c32f96fc356dd6766a7661ba896a9541ea370
font_01_sfnt_off00010ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE3 10080 bytes
SHA-256: 4d133f25a24d4eaaa4c6f970225ab838cb20da5ca6badb14a6dd87faa81ac9fc