Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40ee80911d41a9b…

MALICIOUS

PDF

70.6 KB Created: 2021-02-17 00:25:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c9df355f87a223f91746c7c5a148ea6d SHA-1: 91d23a4a602355d49ca6bb1908fcc1c769ea1c69 SHA-256: d40ee80911d41a9b9f0db016853a2ddff3956f190113ef4fa47b29492b3268b8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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/wix?keyword=apk+to+xap+converter PDF link annotation
    • https://wibipujesotut.weebly.com/uploads/1/3/1/3/131398272/9088728.pdfIn PDF document text
    • http://luranowebereni.22web.org/semexiperivejosuve.pdfIn PDF document text
    • http://pululap.22web.org/jurijibaxenazez.pdfIn PDF document text
    • http://pazobano.iblogger.org/8745165526.pdfIn PDF document text
    • http://tarenutufitox.66ghz.com/durable_power_of_attorney_florida_template.pdfIn PDF document text
    • https://fanamavikere.weebly.com/uploads/1/3/4/6/134610997/burot-modaguxi-vumogip-lovasutamego.pdfIn PDF document text
    • https://fawurefo.weebly.com/uploads/1/3/4/4/134441885/pelewofedax-tizuzukoziveb.pdfIn PDF document text
    • https://kekufakaxuw.weebly.com/uploads/1/3/2/7/132740700/netagegek.pdfIn PDF document text
    • https://belujewirozem.weebly.com/uploads/1/3/2/6/132681559/fibefujagug.pdfIn PDF document text
    • http://muwawukiseka.iblogger.org/mutual_termination_of_employment_contract_letter_template.pdfIn PDF document text
    • http://jodopafipunew.22web.org/fojuvamu.pdfIn PDF document text
    • https://gopogaxewose.weebly.com/uploads/1/3/4/0/134013169/928a82a5f356.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zaxutakizet.epizy.com/bradford_score_report.pdfIn PDF document text
    • http://maguzuj.rf.gd/64458149411.pdfIn PDF document text
    • http://gevalej.epizy.com/brick_breaker_mod_apk_revdl.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_off0000d984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD984 4896 bytes
SHA-256: 1e9067dab94bb6453fb664e5db915d75b793c171284f68ba1811f8da75cf7b44
font_01_sfnt_off0000ea4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4B 10424 bytes
SHA-256: 21235757965f08775667c8ec81c1ca37a491bbd7ca5a2009023913f6298ce307