Malicious PDF — malware analysis report

Static analysis result for SHA-256 de444f840d8d17dd…

MALICIOUS

PDF

52.2 KB Created: 2020-08-08 02:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0e08fbe16860bc2fcc94d50e032a99d SHA-1: 74307d0b785f9fe27fcce111dfddf60f19a07478 SHA-256: de444f840d8d17dd85d2e21f5cd52cd5abcfd7cddbf425352af8b537a2ad49bb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=blank+biodata+form+pdf+free+download'. The document body, though partially corrupted, suggests a lure for a 'blank biodata form pdf free download'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=blank+biodata+form+pdf+free+download In PDF document text
    • http://files.shiftwideopen.com/uploads/1/3/0/8/130874067/zimalogiwuler.pdfIn PDF document text
    • http://files.dallassigmas.com/uploads/1/3/0/7/130775197/tuvugo-wokes-maxam-junaxulone.pdfIn PDF document text
    • http://files.austincst.com/uploads/1/3/1/4/131453823/nesunujonufeg.pdfIn PDF document text
    • http://files.southtownscatholic.org/uploads/1/3/1/6/131636990/3996155.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/1/0437/6195/9070/files/angola_civil_war.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/30095748989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/sotivigonoxerepoxemewido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gibowutobarifokegibig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1111/2092/files/48822948183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/kijibagatumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0074/9467/files/29566920097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/77510744456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4319/9898/files/raseruvozuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/jajaxuxov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/zinorimokegosegoraxijok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/galilunakej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5599/6328/files/37180074757.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 8

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_off00008403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8403 5356 bytes
SHA-256: ff5e0b0e09041d3863dc911ea405ddc2272598af4c3de915bba980028495002f
font_01_sfnt_off00009635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9635 13812 bytes
SHA-256: 022d5dfab9ff25847924bed024592e1121be1c49979e8e1c51607c0a8440c3b6

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