Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1a972f3398cecf…

MALICIOUS

PDF

70.8 KB Created: 2021-02-03 16:41:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7170e4c13d2f19fd31a0ca325e99c21e SHA-1: 0e173f092c709166c9753a765ab8a8fc4a26b78b SHA-256: 2f1a972f3398cecf5a76b297c4c2088511f490790a9927a2f6a9cba751e8c9cd
196 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to S3 buckets and Weebly-hosted PDFs, suggesting a link farm for SEO purposes. The primary redirector URL, 'https://baarspo.ru/123?utm_term=chris+gaines+songs+lyrics', is used to funnel traffic to these potentially malicious downloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=chris+gaines+songs+lyrics PDF link annotation
    • https://cdn.sqhk.co/tivuzofep/jlogegj/farmer_sim_2018_free_download.pdfIn PDF document text
    • https://gisafonenum.weebly.com/uploads/1/3/5/3/135323636/9a6ad8.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/difgcje/36187832962.pdfIn PDF document text
    • http://ewop.space/18993589371tjtzd.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/dugirupexanop-lakujaxekipu.pdfIn PDF document text
    • http://collegegraduatecentraldating.com/sociedad_en_nombre_colectivo_mexicozwxgx.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/iejbBif/instachat_instagram_messenger.pdfIn PDF document text
    • https://varijamali.weebly.com/uploads/1/3/1/8/131856150/4e67e1cc.pdfIn PDF document text
    • http://nicepics.xyz/toefl_integrated_writing_samples4danj.pdfIn PDF document text
    • http://triple-doska6.club/automatic_bending_machinevsvfi.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/9jfjjif/call_of_duty_mobile_gameplay_thumbnail.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/gazivemon/fuditubovijanezenerom.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/boogie_woogie_piano_riffs.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/canon_lide_100_scangear_software.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/gurikegidewet.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/50461281616.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/degumobamizofotorokofij.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/baarish_aur_chowmein_short_film.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/xotulubo.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/24792712696.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_off0000d7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CB 5068 bytes
SHA-256: 5fcd7c5dd1266322d4f6debcb8453aaed1187b815a8f5864c748ac8e09df3ce8
font_01_sfnt_off0000e903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE903 10912 bytes
SHA-256: 2918107fa030908ded64a35d665736b7f76902c664b3bd9cfd1ae83364c1fb7a

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