Malicious PDF — malware analysis report

Static analysis result for SHA-256 df4319a67e67d676…

MALICIOUS

PDF

39.2 KB Created: 2020-08-07 14:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ceb159300b2289a8456cff21186eed9b SHA-1: c8caef4459e683a102b5a942e033640335d8c0dd SHA-256: df4319a67e67d6761ae89f47cf0f0baeed8b48d4d4ffd6ee61f77f101b397d68
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is https://ttraff.ru/pify?keyword=market+leader+business+english+advanced+pdf, which is flagged as malicious. This indicates the document is designed to lead users to malicious infrastructure, likely for credential harvesting or malware distribution.

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=market+leader+business+english+advanced+pdf In PDF document text
    • http://files.laurelwooddoodles.com/uploads/1/3/0/7/130776611/7879491e6.pdfIn PDF document text
    • http://files.canadoretv.com/uploads/1/3/1/6/131637546/noxiwutezepoxil_kakenolox_tanulij_kifuf.pdfIn PDF document text
    • http://files.bltsnv.org/uploads/1/3/1/4/131438330/315039.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/1/0432/2145/0914/files/77776549276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2951/0814/files/wabal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/penguin_readers_level_3_notting_hill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9180/1752/files/rti_application_form_pdf_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/army_class_b_uniform_setup_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5824/7320/files/electronic_technician_resume_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/61697980184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7700/files/54427566060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/vomifudufubijovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jezimix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4357/7256/files/zapuwizabozilamofupomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/8201741085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8308/8547/files/nutegojaruvurunavugepuw.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_off00005b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B08 5684 bytes
SHA-256: 983fbc85401448b5a2023ebb906032e6c7e365932dc426cd59afb77b7ae901a0
font_01_sfnt_off00006e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E69 9816 bytes
SHA-256: d17e5fbe9d072af357b0b2fbfc401eb5e500626ed68915ef5f86ef888a081fcc

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