Malicious PDF — malware analysis report

Static analysis result for SHA-256 c465191931a3d717…

MALICIOUS

PDF

72.2 KB Created: 2021-02-08 05:17:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 217943bc4f3f30c7f19b4b8c242f152c SHA-1: 397e6321fca1f32ca82dbe6554dde6bac2987698 SHA-256: c465191931a3d7179a869206275bb7ff438784b0b94d6991ab500242676e3bf3
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/aws?utm_term=creature+3d+video+song+free PDF link annotation
    • http://uber-global.com/crowd_talking_sound_effect_download4quch.pdfIn PDF document text
    • http://fredo.run/stick_ranger_wiki_classesekpnf.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/dEhdpiy/58842636832.pdfIn PDF document text
    • http://prizinsta365.online/luwumekolop3m7mm.pdfIn PDF document text
    • http://yogistika.space/wotulep7it1f.pdfIn PDF document text
    • http://detonic-official.website/lifamorwvjuf.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/jfhb4ng/ship_mooring_simulator_ios.pdfIn PDF document text
    • http://girlita.space/electrical_contractor_service_agreement_template3jqe8.pdfIn PDF document text
    • https://cdn.sqhk.co/nepusoliweda/QG3ibgi/best_girl_chat_app_for_android_free.pdfIn PDF document text
    • https://nusewumu.weebly.com/uploads/1/3/2/7/132740482/9e594.pdfIn PDF document text
    • https://narusipanunajix.weebly.com/uploads/1/3/1/0/131069819/ribovaded.pdfIn PDF document text
    • http://sarkife.site/armello_dragon_clan_rings41hyf.pdfIn PDF document text
    • https://jebasiju.weebly.com/uploads/1/3/1/3/131381450/66800b8a.pdfIn PDF document text
    • http://kelnoteres.xyz/blanket_cover_sheet_cheapbi72k.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/859697075cvd3a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nademopor/bomberman_original_apk.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6A 5172 bytes
SHA-256: 535af59d94521c5042cb057a45f99439a2e584831fc9bb4a7e7e65220553fd04
font_01_sfnt_off0000e119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE119 10800 bytes
SHA-256: b9af7e76646e59660100d599ed149330997fa840ab5e9ef63ad8d09ff98a116e
font_02_sfnt_off000105d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D1 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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