Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f8fe279082cd0f…

MALICIOUS

PDF

49.3 KB Created: 2020-08-03 22:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 82bf7bebe6f08860f3ee2c6fcc56571c SHA-1: 5a6ad0e45dcbe527d62bc7dbe365936ee085987c SHA-256: 44f8fe279082cd0fabf5c84841e1d95b2be67a859a6121c32a0219021df0b203
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to funnel users to malicious content. The document body, though heavily corrupted, contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create documents for SEO purposes. The primary malicious URL is https://ttraff.com/pify?keyword=journal+of+acidimetry+and+alkalimetry+pdf, which is likely part of a phishing or malware distribution chain.

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=journal+of+acidimetry+and+alkalimetry+pdf In PDF document text
    • http://files.youngpeopleandchildrenfirst.org.uk/uploads/1/3/1/4/131437074/85c581.pdfIn PDF document text
    • http://files.nattycordonkayaking.com/uploads/1/3/0/9/130969801/3816610.pdfIn PDF document text
    • http://files.ezservicelist.com/uploads/1/3/1/0/131070192/xikagapej_roreweje_tekivav.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/1/0430/2385/9873/files/65654685295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/99718776626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/xigotorafuwikofisazujamal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6038/0327/files/lawuzunemelalajoripasikot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/50740755287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/jaxupavijuxisikulopexik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/158552975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/warebalavabufuxikilux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7860/5218/files/ipad_form_filler.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E74 5280 bytes
SHA-256: 4cc2ffd77480b7686628404abad9a2d7d3abc65b0cbaf873d0a057ecca74e744
font_01_sfnt_off00007063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7063 16496 bytes
SHA-256: 96a244259610ab9d750d56c553110a8fc470bc182bec834c19a9eecfb221ada8
font_02_sfnt_off0000a3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B3 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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