Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbbe324d026fb0de…

MALICIOUS

PDF

74.2 KB Created: 2021-01-27 11:16:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c0799540d28236744103816e9785077f SHA-1: af47517dafc2964c634be90e70dbf81055c1da5f SHA-256: fbbe324d026fb0dec305fd5347dbefec97d91d47000e801905281fdeb21c15b3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, identified as a "PDF_SEO_LINK_FARM" heuristic, pointing to various PDF documents hosted on external domains. The primary URL, "https://baarspo.ru/123?utm_term=vitamin+b12+deficiency+and+miscarriage", suggests a lure related to health information, likely to deceive users into visiting malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF.

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 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.
  • 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/123?utm_term=vitamin+b12+deficiency+and+miscarriage PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452377/normal_5fe5158a09761.pdfIn PDF document text
    • https://xuxijoma.weebly.com/uploads/1/3/3/9/133997678/roregivubagenup.pdfIn PDF document text
    • https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/162dd.pdfIn PDF document text
    • http://ekzo-fruit.ru/international_business_degree_worth_ity092w.pdfIn PDF document text
    • https://wezisewego.weebly.com/uploads/1/3/5/3/135342704/37e41e075.pdfIn PDF document text
    • http://simcars.ru/kejolisamukajedorbh.pdfIn PDF document text
    • http://beststudent.fun/luketamelodonikudijuxoofucs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415944/normal_5ffd01ed2dec9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5ff92bbd20453.pdfIn PDF document text
    • http://idealica-columbia.site/warhammer_quest_silver_tower_hero_cardsux3zf.pdfIn PDF document text
    • http://lnstagram-office.com/elite_motors_inc._kennesaw_ga_30152y9km2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_5fd67b324244f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426972/normal_5fef19febe1a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403266/normal_60002ed72e8d7.pdfIn PDF document text
    • https://ribofefafuf.weebly.com/uploads/1/3/4/7/134770843/3488637.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473926/normal_5ff77906d55f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424040/normal_60028d7f7258e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409421/normal_5fe568c7a9679.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/android_to_iphone_xr_transfer.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_off0000e5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AA 5700 bytes
SHA-256: ea2a01dbfd5206bc67d4254832db6c70105b3602ecf02fb1687f0db526e53c19
font_01_sfnt_off0000f919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF919 10168 bytes
SHA-256: 4e08211ccf1a51ad5bd04baa2361e285fa5ccdeb98b8ca69790e0db98239e017

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