Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b270737350a6888…

MALICIOUS

PDF

32.9 KB Created: 2020-08-05 04:30:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19c9f07bfd0b2b8a90953339a3bf5898 SHA-1: fdb2af4462689c6fe302ab86e5871e45a756a346 SHA-256: 5b270737350a688864c8b67143380f82b4926f1ecb2dab2a1d7d65d3ae6ab2a4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to create an SEO link farm, directing users to a malicious redirector. The primary redirector URL is https://ttraff.ru/pify?keyword=business+process+improvement+toolbox+second+edition+pdf, which is flagged as malicious. This indicates a phishing or scam attempt leveraging SEO techniques to distribute malicious content.

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=business+process+improvement+toolbox+second+edition+pdf In PDF document text
    • http://xanixa.shop1021.com/uploads/1/3/2/7/132710780/tuzupebuliwefupoz.pdfIn PDF document text
    • http://files.chino77thcavalry.com/uploads/1/3/2/7/132740545/busiva-xifebojetata-vidugazukijelu-madifodezit.pdfIn PDF document text
    • http://files.scalelive.com/uploads/1/3/2/6/132682070/dilofuvumagofo_xovogi_lajibo.pdfIn PDF document text
    • http://fibopinu.delaneydiamond.com/uploads/1/3/0/7/130776487/46492ce0bd6.pdfIn PDF document text
    • http://files.thefutureofindiana.org/uploads/1/3/0/8/130815058/7854339.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/1/0432/1204/6491/files/98454773611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/7494499460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4317/6091/files/jvc_everio_soft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2591/4277/files/xukoxexoxeradaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5197/3799/files/povuwiniretatejaxodogibor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/nimusogenebani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/wunopamipidawukuruwup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7492/9319/files/rujikusijudobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5802/6903/files/meluzekudevagafuxibasilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/mccance_pathophysiology_7th_edition.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_off000046ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46EE 5408 bytes
SHA-256: 5c50e3f65d06c876a1c85471c64698184bbd2696a40177e00d2a59c055533f04
font_01_sfnt_off00005945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5945 8508 bytes
SHA-256: 3028c6854218da799df182ac03396b78ddb2c0a3f8cd5d5a879e08ae41a1271e

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