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)
MD5: 49ae7b794892550dffaadd577d195b8a SHA-1: 666e11cf72781c568b5a30980d26bcf021b348ed SHA-256: 9d965018e753cb7a9bb58f398dc75f040e115dae8afa85d1124e985db9845f18
120 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.

Heuristics 3

  • 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.
  • 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
    • http://files.jamesdouglasmultimedia.com/uploads/1/3/1/8/131856380/vajuwegezederag.pdf
    • http://files.rustadtours.com/uploads/1/3/1/3/131378899/a89712ac.pdf
    • http://files.samwheelockmusic.com/uploads/1/3/0/7/130739028/dusuvigaromapuz-punojige.pdf
    • http://files.samwheelockmusic.com/uploads/1/3/0/7/130739028/dusuvigaromapuz-punojige
    • https://cdn.shopify.com/s/files/1/0440/8547/7541/files/pigakuwatika.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/21019260172.pdf
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/83339554738.pdf
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/61036578046.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/xevidoroxusuv.pdf
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/guxexilatosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/31139808602.pdf
    • https://cdn.shopify.com/s/files/1/0435/8419/2675/files/14673120145.pdf
    • https://cdn.shopify.com/s/files/1/0432/1958/3138/files/nidujomosibafatufemo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/65422981913.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/mojetuvag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/wobafixisoresegepenesatix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007098.bin
e3b41ee47bcebf8660af984b822f9555b5d734e7118afa72668059c73f2e4464
pdf-font-stream PDF embedded font (sfnt) at offset 0x7098 4912 bytes
font_01_sfnt_off0000811f.bin
43b0276abfae7cca821fba390bda328cf8ec0c6a43d09f34dfe3d4de34a3cb54
pdf-font-stream PDF embedded font (sfnt) at offset 0x811F 3536 bytes
font_02_sfnt_off00008f0e.bin
9051b3081e4f1b20cf91442ea1ac9380cf8ccc58e57cb2ea8699b4d6a257f49d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0E 10712 bytes