Malicious PDF — malware analysis report

Static analysis result for SHA-256 37369c482a803f00…

MALICIOUS

PDF

95.2 KB Created: 2020-07-26 23:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fee7eb382363e05365e480a61b0bba0a SHA-1: 4a7763a1494365ab670dc7ff43c76143e500ad89 SHA-256: 37369c482a803f00c171ca35dedad945a238419ae696abbb83817f4934196a09
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. It also contains a high heuristic for a browser extension installation lure, indicating a social-engineering attempt. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a search query, suggesting it was generated for SEO purposes to attract users. The presence of numerous external links, many pointing to Shopify, further supports the SEO link farm tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.cc/pify?keyword=fm+radio+station+software+free In PDF document text
    • http://files.dartendistrict.com/uploads/1/3/1/8/131856381/jarukid.pdfIn PDF document text
    • http://files.cairnsclassictours.com/uploads/1/3/2/8/132815118/ad9d8cbcdba.pdfIn PDF document text
    • http://files.innerdancer.net/uploads/1/3/0/7/130775002/tepegopoz.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/1/0435/5080/2081/files/87180349710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5964/1496/files/85938424557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/kuguwajevawidagov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/javepadan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/goduxusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8056/3350/files/51417896071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/tazosilabimil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/66619037518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/11077229847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/porolevexiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6582/files/77292116655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3438/5303/files/kogogok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/88758694851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7424/8101/files/48594554697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3760/5544/files/60872266588.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E50 4856 bytes
SHA-256: d0ed8e3c2dfd935ec0b515d22f2d8b9006262233a0c6cdc57d7118535e6d7e65
font_01_sfnt_off00013eb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB7 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00014745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14745 11800 bytes
SHA-256: 0ca92e0ee896801f00e79c1b0207a7df5a11206d285ee1b48ea46a99be951538