Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bff019f198b4616…

MALICIOUS

PDF

45.6 KB Created: 2020-08-11 14:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9ce5dc0b96ba60cedf9b27c92b1a06f SHA-1: ad722b382058698fe73686dfc664d518f4b9f1e1 SHA-256: 8bff019f198b46169870f762936501a6566c0f60d8651e67988b3a5b1476da09
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links, characteristic of a link farm. One of these links, pointing to 'ttraff.ru', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous Shopify links likely serves to obscure the malicious redirector within a large volume of seemingly benign 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=barorreceptores+de+baja+presion+pdf In PDF document text
    • http://files.kwebsterglass.com/uploads/1/3/2/6/132695551/1203027.pdfIn PDF document text
    • http://files.lydiamartinstudio.com/uploads/1/3/0/8/130814676/b23e7.pdfIn PDF document text
    • http://files.antonianhonors.com/uploads/1/3/1/1/131164081/f67f59dee24.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/1/0428/9835/8432/files/53059057271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/59166744871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/42812606499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/vijigogalasisibezunikug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/kesuwafifubet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/58894519355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/42356771426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/nubewojukuxaxumuberaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/54669910661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3303/2864/files/all_notsobot_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0326/1606/files/analysis_of_swot_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/foxuwidelipafaweni.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 4

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_off00006e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E46 5380 bytes
SHA-256: 6f80427f6c073d118e66f0e310c9564ce2638fc1859c1e6c7be305ad5bcc626d
font_01_sfnt_off0000809e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809E 12848 bytes
SHA-256: 0412d220057d12ef5c368b8fe33c2f15449737ff1f68c1fb70035b79b3eeff8a

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