Malicious PDF — malware analysis report

Static analysis result for SHA-256 902ce04a132e5f2d…

MALICIOUS

PDF

72.3 KB Created: 2021-02-23 19:06:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d8f68dd684672e759cbf9704de3d72f3 SHA-1: efc2010f8484fab2f2d3d124dcd7086de22180ff SHA-256: 902ce04a132e5f2dbd3711da3678f59a932c254f64ded98600586a40a3e8bc08
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or trojan delivery mechanism. The document contains numerous embedded URLs, with a primary one pointing to 'maypoin.ru', suggesting it's designed to redirect users to a malicious site. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports the malicious intent by indicating a link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/strik?utm_term=how+to+turn+off+switch+pro+controller PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480581/normal_601935b0da1ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5fd643d2f1ec5.pdfIn PDF document text
    • https://pinejose.weebly.com/uploads/1/3/4/4/134467182/c3de5fba327d.pdfIn PDF document text
    • http://lesanuzununefa.22web.org/at_technocare_apk.pdfIn PDF document text
    • https://gipafefigemer.weebly.com/uploads/1/3/4/0/134097902/97ccd270ed99e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482870/normal_5fe4c4e47b4f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461234/normal_5feb940a29df2.pdfIn PDF document text
    • https://cdn.sqhk.co/lunabati/jeDu0gd/adidas_slides_adilette_mens.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386081/normal_6028acaf5b5bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369796/normal_5fee53a9b9527.pdfIn PDF document text
    • http://inmyshtangen.xyz/grandparents_day_ideas_for_schoolg6wfa.pdfIn PDF document text
    • https://gavuwili.weebly.com/uploads/1/3/1/0/131070236/jawinawitilaxon-mexoxinifadumap.pdfIn PDF document text
    • http://fortuneo.biz/fisimowudoda9d5hv.pdfIn PDF document text
    • http://graatorama.space/the_new_urban_sociology_5th_editionj0j75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481993/normal_5ffcf8376ed2f.pdfIn PDF document text
    • http://bepebeku.22web.org/autograph_kolkata_full_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374203/normal_601f70f479d18.pdfIn PDF document text
    • https://xasananixekoweg.weebly.com/uploads/1/3/4/4/134442195/lirug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rozosijamuruxo.rf.gd/camping_checklist_excel_template.pdfIn PDF document text
    • http://rokivurudaga.epizy.com/jopukavodesijinusu.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_off0000df29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF29 4948 bytes
SHA-256: 3d4734228f1809071d2012f69bc84484ea47a8fae70196f5df4299646663e5c4
font_01_sfnt_off0000f00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00E 10416 bytes
SHA-256: e9dba4e4f59968c754b6fb1ca4b03fedb0457f8e9521ab7b0805e09dccdbde72

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