Malicious PDF — malware analysis report

Static analysis result for SHA-256 675029a27d3c48cf…

MALICIOUS

PDF

83.1 KB Created: 2021-03-12 07:31:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 292eece574ee46d21745f77d29f86a77 SHA-1: 7e684d4c94fcd0e15be1d211d3aa82e1ab0d2a11 SHA-256: 675029a27d3c48cf0d24426976e3fda29815258ea686935276444085241c7f78
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The embedded document body, though partially corrupted, references 'Attestation de prise en charge pour visa allemagne pdf', aligning with phishing or scam lures. The presence of external URIs and the overall structure point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/award?keyword=attestation+de+prise+en+charge+pour+visa+allemagne+pdf PDF link annotation
    • http://bigops.fun/292528391071gdrg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_60277732d5fe7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390381/normal_6001d8109cee7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417992/normal_5fd2593d13c15.pdfIn PDF document text
    • http://circulshtangcalip.website/hunter_x_core_test_programsmuh2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465691/normal_6044cb1eb932f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482407/normal_6025c27713db4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475194/normal_603604931b73d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450876/normal_5fface8b28cb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446930/normal_5fe262be9e1c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503390/normal_5febc25a9cbe1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377114/normal_60046baa01761.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/49c370a8-a0dc-473a-a82e-0e041c2ef925/jovepavozikiforabivosuxid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/961147ac-0cb9-451e-a5d5-34a0c002e2b9/gidekakifabotuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/236d7abf-3e02-4f7a-a52c-a52cc2ca11b5/57338562711.pdfIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_85731e14be10427183ee6e0d7153539c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/41f36b4f-7afb-4e42-8c8c-ed5b2253ba09/the_hierophant_tarot_meaning.pdfIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_45bdaff705c54c7bbe540c2a914db99c.pdf?index=trueIn PDF document text
    • https://a5fc3680-5c08-4cda-bd6c-abaa3bdf25bc.filesusr.com/ugd/ea5d7b_6e93366c5a7149679b457b87d4968248.pdf?index=trueIn PDF document text
    • https://b9eb3541-094c-4606-b101-17c2291fd6e1.filesusr.com/ugd/a18601_69760d48d4cd499e91561fad137fbc52.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eb4c8d3-a860-464c-8174-4726312d245e/xigojezixatalupizuvi.pdfIn PDF document text
    • https://a5fc3680-5c08-4cda-bd6c-abaa3bdf25bc.filesusr.com/ugd/ea5d7b_1e67d201cf3f436297a52a70e25fca30.pdf?index=trueIn 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_off000104fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FD 5620 bytes
SHA-256: 199014f37656a4fccaeebf88d9e5addca4531530764f73a715c51edf3a580e4e
font_01_sfnt_off000117fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117FD 11848 bytes
SHA-256: 07e64c1f5c866a6c2068b72a3f442a11917d69a71299a4a32ad49c8380d4d16a

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