Malicious PDF — malware analysis report

Static analysis result for SHA-256 31942677756f3974…

MALICIOUS

PDF

81.5 KB Created: 2021-03-02 20:00:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c4e23c54f659674af4320a333b895830 SHA-1: 3dc7afc86a1368dab364ee934f855a2ce9ba6a66 SHA-256: 31942677756f39746e207a0e53790dbe1f14a00d11e29ca1948c62654aa8bfc5
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one specifically pointing to a URL that appears to be part of a link farm designed to attract traffic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/award?keyword=forgotten+firearms+youtube PDF link annotation
    • https://cdn.sqhk.co/tezofugowura/fV56qrB/mhw_builder_app.pdfIn PDF document text
    • https://rolugoxeve.weebly.com/uploads/1/3/1/3/131380951/xesufetevo_jibaxo_beruroda.pdfIn PDF document text
    • https://vadewowiruku.weebly.com/uploads/1/3/1/3/131382700/7621190.pdfIn PDF document text
    • https://cdn.sqhk.co/gukisafuw/7ialjaE/beard_styles_for_round_face_male.pdfIn PDF document text
    • https://cdn.sqhk.co/torevebeti/shbnQta/burulemupaxuxefozema.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/nFXRJhf/all_notes_in_sheet_music.pdfIn PDF document text
    • https://tematurulabi.weebly.com/uploads/1/3/1/6/131606540/b0e3ecb0455844.pdfIn PDF document text
    • https://cdn.sqhk.co/murerezusa/sjjjiCt/xedonitumatafalutalat.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/ibtha8C/katuzituko.pdfIn PDF document text
    • https://lujigoget.weebly.com/uploads/1/3/4/4/134482608/3959895.pdfIn PDF document text
    • https://cdn.sqhk.co/kebabefepu/jELshjz/57313478831.pdfIn PDF document text
    • https://cdn.sqhk.co/naxiwakiwuv/grjjjje/89321048155.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/pujinit/gautam_buddha_images_hd_wallpapers.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/22564146775.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/vi_commands_in_unix.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/mugenuredaxujo.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/kudox.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/jasosukavuvikexagoxovekif.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/order_of_operations_with_grouping_symbols_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/toxonekegulojanowazegul.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/pewamagixa.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_off0001042e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042E 5252 bytes
SHA-256: 89c2bf59dbd179c07bc25955133973ef71a3a57bc0496ee3d2fe0514de17d346
font_01_sfnt_off0001160c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1160C 10080 bytes
SHA-256: 22068a7d584294cb8ef49bc4d361cad9bcc0c0daa3706defd5e3c7730a7b80aa

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