Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f24ac2acefd368a…

MALICIOUS

PDF

67.9 KB Created: 2021-02-23 16:38:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 29fa3fa847ae94880aea465724181975 SHA-1: 18a9e13af0ad9c6992326a8d0264b49bdff28b96 SHA-256: 4f24ac2acefd368a0ac29e8d82ca866791676c4b91be56944d599ab0b5ed3bbd
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://maypoin.ru/wb?keyword=what%20is%20the%20directv%20remote%20code%20for%20onn%20tv PDF link annotation
    • http://mosoxiliraf.iblogger.org/20480086390.pdfIn PDF document text
    • https://tokarakuwo.weebly.com/uploads/1/3/0/9/130969339/74baf4baaf6.pdfIn PDF document text
    • https://mipixapotorifa.weebly.com/uploads/1/3/0/9/130969355/4975075.pdfIn PDF document text
    • https://zogujajuzeve.weebly.com/uploads/1/3/5/3/135392671/tumuvulinoresaluduk.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/hc07ibD/51143016273.pdfIn PDF document text
    • https://cdn.sqhk.co/bagekaketox/NhdsnG5/migopaxukitewefefonoto.pdfIn PDF document text
    • https://sunatoruxule.weebly.com/uploads/1/3/4/4/134476105/8457260.pdfIn PDF document text
    • https://linefalaxig.weebly.com/uploads/1/3/2/6/132682404/jebokafagupusaw_vilenaxemobujip.pdfIn PDF document text
    • https://xazonulukobimov.weebly.com/uploads/1/3/2/7/132712199/pedin.pdfIn PDF document text
    • https://dumosube.weebly.com/uploads/1/3/1/1/131163669/makafor.pdfIn PDF document text
    • https://biwakegexenulu.weebly.com/uploads/1/3/4/4/134437141/timisabak.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/momekizetuna_fobamefigimeto_wefuw_gidumuditim.pdfIn PDF document text
    • https://kumuxulunewun.weebly.com/uploads/1/3/0/7/130775174/wiwigogela_zeneruse_nejudodagugave_lodenesa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bezukovopobav.epizy.com/inhaled_antibiotics_guidelines.pdfIn PDF document text
    • http://livuladebugalab.rf.gd/disgaea_dark_assembly_guide.pdfIn PDF document text
    • http://jofesosozofoso.epizy.com/gesir.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/rifipabanosorexitugibud.pdfIn PDF document text
    • http://guwavamo.rf.gd/nucleotide_synthesis.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_off0000ccb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB3 5300 bytes
SHA-256: 195a98b6f0d2b75358e766607655ee2ac335b00006e49b288cc33a320b4efdc3
font_01_sfnt_off0000dea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA2 10488 bytes
SHA-256: d0a94d718a01395ec21496a313ba7db02108290fa528115b14e2d1e1c3789a28

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