Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba4ffd3338bb3dde…

MALICIOUS

PDF

45.3 KB Created: 2020-08-21 23:07:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3cfe7ac1172c06cbd97482959181c469 SHA-1: ec922cd6179c9eedc3a6d478aba5475674e62224 SHA-256: ba4ffd3338bb3dde11be2e17a6a4a721f90ce8f9867116dfbe7337fe8887a623
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL, https://ttraff.ru/pify?keyword=afghanistan+a+military+history+pdf, is associated with malicious activity. The document appears to be part of a link farm designed to lure users into clicking through to potentially malicious content, masquerading as a free download.

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.ru/pify?keyword=afghanistan+a+military+history+pdf In PDF document text
    • http://files.victoriagrayphotography.com/uploads/1/3/1/3/131398140/pimabareparumix.pdfIn PDF document text
    • http://files.jamie-carl-design.com/uploads/1/3/1/3/131381542/fezeb.pdfIn PDF document text
    • http://files.clevelandchamberchoir.org/uploads/1/3/0/9/130969678/vafekexusu_wobigeb_vixut.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/1/0433/0687/7080/files/68906731860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4267/5608/files/64986745404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2625/4745/files/el_enlace_covalente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/99119297308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2275/1643/files/soropomesolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4492/9690/files/dudulenagoxedoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/wogozitekigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9724/4316/files/29628468210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1026/7035/files/half_life_questions_and_answers_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/zakupinekorepixuzuderodok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/54999695778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/merge_branch_into_master.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/pdf_annotation_app_mac.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 7

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_off0000737f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737F 5544 bytes
SHA-256: ead169c071ee5c80d51252848638f642139ec34f88bc0f4dd5d8f34358108da8
font_01_sfnt_off0000862d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x862D 10040 bytes
SHA-256: 5888c90d5b12181c40a601686e43b557e26e83880cc789f8fefbdbe3a341e042

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