Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0662fa8c6f9445…

MALICIOUS

PDF

79.6 KB Created: 2021-02-11 14:12:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 430a2646668376357e7ca825ad0069b0 SHA-1: 8c9e25983125a077da8e44495b80e45a33fea905 SHA-256: fc0662fa8c6f9445489f09c53ccdd946f5822cbf990f2372f77c4d96580e2b05
186 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 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://baarspo.ru/wix?keyword=download+fairyland+go+keyboard+apk PDF link annotation
    • https://lopufofogepuxal.weebly.com/uploads/1/3/4/6/134695200/besumetanawezox_waxasavafumame_lutimagetobiwi_manike.pdfIn PDF document text
    • https://posuzelivoj.weebly.com/uploads/1/3/4/8/134869480/doviwimiloro-wibunedoku.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/iW3bhFn/how_to_write_a_proposal_paper_for_english.pdfIn PDF document text
    • https://fejevudud.weebly.com/uploads/1/3/2/6/132695511/rusututoz.pdfIn PDF document text
    • http://tidemelewofu.iblogger.org/97336464882.pdfIn PDF document text
    • http://badodamibevije.iblogger.org/ark_survival_evolved_apk_rexdl.pdfIn PDF document text
    • https://xalojuxovev.weebly.com/uploads/1/3/0/7/130774978/rafalu-sutajo-lepuximineperu-niwisazeriku.pdfIn PDF document text
    • https://cdn.sqhk.co/jakatote/biihasF/nawajipatoketuxowapi.pdfIn PDF document text
    • https://cdn.sqhk.co/jogeguzotire/AjbXWgj/download_tower_fortress_mod_apk.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/gozamuguporufe.pdfIn PDF document text
    • https://sugovodeko.weebly.com/uploads/1/3/2/6/132681033/4143995.pdfIn PDF document text
    • https://mitivowa.weebly.com/uploads/1/3/1/6/131607237/2133165.pdfIn PDF document text
    • http://prizinsta365.online/muropuwuvuzagawimalumosunyzs37.pdfIn PDF document text
    • https://puxodemidumez.weebly.com/uploads/1/3/5/3/135345879/javaz.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/gh6E8ur/mini_golf_denver_airport.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buketoxepebaf.epizy.com/ghatanji_weather_report.pdfIn PDF document text
    • http://gugawojakopa.rf.gd/movenoz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000d971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD971 5428 bytes
SHA-256: 8d559173e3391e357738317494ef21d025dba3f771ca7bbffb12be9ddc6d179a
font_01_sfnt_off0000ec1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1C 14824 bytes
SHA-256: 572fbef11bba9fd4e2f9931e88622a2d45cd2834a1e8797fe1004c4afcee64a0
font_02_sfnt_off000119d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D8 16160 bytes
SHA-256: 4c551fe6711f719e6858f54c6090a7f3bba011e21d5f0488c207ae7db7b63cd6

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