Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb94fa36d7cfbf86…

MALICIOUS

PDF

45.3 KB Created: 2020-08-12 02:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cca8a410eb267b8370a409f5a4e5e4b SHA-1: 8c5c8fcef711c431e9803bd18ebc57a16df3a97b SHA-256: fb94fa36d7cfbf86492d2b44897d526aa9054682f45bf2ee895f9cb70025abb2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate-looking documents. The primary malicious URL identified is https://ttraff.cc/pify?keyword=accouchement+%25C3%25A0+domicile+en+afrique+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/pify?keyword=accouchement+%25C3%25A0+domicile+en+afrique+pdf In PDF document text
    • http://varobo.pslcrazyquilters.org/uploads/1/3/0/7/130738779/1ca60d5b9f6.pdfIn PDF document text
    • http://files.tacomansd.com/uploads/1/3/2/6/132682892/5792929.pdfIn PDF document text
    • http://zoditesu.searchlightorganization.com/uploads/1/3/1/0/131070420/bunoxijuxo-bilupol-gikuvopoxanotij.pdfIn PDF document text
    • http://files.cataloniahikingholidays.com/uploads/1/3/0/7/130776499/c9cbaeaee8a160.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4229/2391/files/7885155679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/rimworld_mod_folder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/rabizanol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/fotofelalux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/40072564069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4299/5352/files/microsoft_active_directory_administration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/catalogue_disjoncteurs_schneider_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/carnatic_music_book_telugu.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E07 5564 bytes
SHA-256: b62c887955d5f8bbbd746520c4b179e3feac2c7c5330dfcdf62ebe88bec5c47b
font_01_sfnt_off0000803c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803C 12060 bytes
SHA-256: a8934e25de595a8491735806ea484b89b0e996986bc753c193d37d739d43b95e

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