Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d965018e753cb7a…

MALICIOUS

PDF

48.4 KB Created: 2020-07-27 15:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49ae7b794892550dffaadd577d195b8a SHA-1: 666e11cf72781c568b5a30980d26bcf021b348ed SHA-256: 9d965018e753cb7a9bb58f398dc75f040e115dae8afa85d1124e985db9845f18
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc' with a keyword suggesting a lure for a social media stalking tool. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The presence of numerous external links, many hosted on Shopify, suggests a link farm or redirection strategy. The primary IOC is the malicious redirector URL.

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.cc/pify?keyword=instagram+stalker+premium+apk In PDF document text
    • http://files.jamesdouglasmultimedia.com/uploads/1/3/1/8/131856380/vajuwegezederag.pdfIn PDF document text
    • http://files.rustadtours.com/uploads/1/3/1/3/131378899/a89712ac.pdfIn PDF document text
    • http://files.samwheelockmusic.com/uploads/1/3/0/7/130739028/dusuvigaromapuz-punojige.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/1/0440/8547/7541/files/pigakuwatika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/21019260172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/83339554738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/61036578046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/xevidoroxusuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/guxexilatosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/31139808602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8419/2675/files/14673120145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1958/3138/files/nidujomosibafatufemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/65422981913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/mojetuvag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/wobafixisoresegepenesatix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.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_off00007098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7098 4912 bytes
SHA-256: e3b41ee47bcebf8660af984b822f9555b5d734e7118afa72668059c73f2e4464
font_01_sfnt_off0000811f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x811F 3536 bytes
SHA-256: 43b0276abfae7cca821fba390bda328cf8ec0c6a43d09f34dfe3d4de34a3cb54
font_02_sfnt_off00008f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0E 10712 bytes
SHA-256: 9051b3081e4f1b20cf91442ea1ac9380cf8ccc58e57cb2ea8699b4d6a257f49d