Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b405c1094076a1…

MALICIOUS

PDF

72.8 KB Created: 2021-02-22 13:16:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 65ee48ee78d52bf1e4567db254b933c9 SHA-1: bc9e3afe5672bdc41c60dec0deb2e87989ba66f2 SHA-256: c6b405c1094076a1028757821d3d2e2525a179c3c63c123468f660f313c7983a
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded URLs likely lead to malicious content or phishing sites, aiming to compromise the user.

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://jottigo.ru/wb?keyword=in%20a%20manufacturing%20company%20the%20cost%20of%20factory%20labor%20consists%20of%20all%20of%20the%20following%20except PDF link annotation
    • http://verifiedbadges-form.com/rabbit_domain_kingdomvcpsz.pdfIn PDF document text
    • http://xivixevikid.iblogger.org/kinilerovemoxejalulezed.pdfIn PDF document text
    • http://rankingcoach-apps.com/17551716313pqrrm.pdfIn PDF document text
    • https://riledamulobav.weebly.com/uploads/1/3/0/9/130969772/vewuk.pdfIn PDF document text
    • http://borezopesane.22web.org/delobekarax.pdfIn PDF document text
    • http://dirtygirl.fun/petsafe_citronella_collar_not_sprayingk24p5.pdfIn PDF document text
    • http://bbbbbbbbeeee.space/resumem_dela_biografia_de_pierre_de2tkln.pdfIn PDF document text
    • https://napuguvu.weebly.com/uploads/1/3/0/9/130969658/9508596.pdfIn PDF document text
    • https://lajisoxe.weebly.com/uploads/1/3/4/4/134435468/gexedugirepep-kokatofelesigi.pdfIn PDF document text
    • https://bejivuvepezera.weebly.com/uploads/1/3/4/4/134437422/5539605.pdfIn PDF document text
    • https://sixikubirosepup.weebly.com/uploads/1/3/3/9/133997641/2d70a2a0825.pdfIn PDF document text
    • http://antileqphh.site/sheets_of_plywood_jewsons38mof.pdfIn PDF document text
    • http://neojust.ru/zedewusukol13vvh.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/zodererezuzuxi/escape_room_answers_level_217.pdfIn PDF document text
    • http://juvisupejigu.epizy.com/tupunasedizuwu.pdfIn PDF document text
    • http://zozadugaweguj.epizy.com/68559637363.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C4 5648 bytes
SHA-256: 01b1fe29c6a055652b1ed636d525691c2e378c08dc4389ebe5297294f149d4b7
font_01_sfnt_off0000e3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E3 10208 bytes
SHA-256: 41add66d4c2b3c9944a12dc56e1bf17183711188b3068b05a1ad667fd79f0ca0
font_02_sfnt_off000106e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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