Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3070974fea99dc…

MALICIOUS

PDF

42.0 KB Created: 2020-08-06 20:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9791dff915b6f73630017244c17b1be4 SHA-1: 49c1cfe31328ed485a9b7aa3679a512a164aa00f SHA-256: ad3070974fea99dcae5994768308f97f2e9d33afa602f0d265b6f6ee5329f213
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=emulation+ritual+13th+edition+pdf', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the malicious URL and a benign Shopify URL, suggesting a lure to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=emulation+ritual+13th+edition+pdf
    • http://files.waveneysecurity.com/uploads/1/3/1/4/131407734/rujorarukaxojerate.pdf
    • http://files.jessejamesgaming.com/uploads/1/3/0/7/130775286/kegipafodosal-fugureda-pelow.pdf
    • http://files.baptistelakecampingandstorage.com/uploads/1/3/1/4/131483184/2d985a1add1c.pdf
    • http://files.humblejumble.org/uploads/1/3/0/9/130969176/af410bad3c686.pdf
    • http://files.irepainternational.com/uploads/1/3/1/6/131606674/zugukatufidunumika.pdf
    • https://cdn.shopify.com/s/files/1/0436/5674/1022/files/duzir.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6815/files/62629116365.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/university_of_cape_town_prospectus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/6957/0198/files/49444925000.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/25748958463.pdf
    • https://cdn.shopify.com/s/files/1/0435/0446/8134/files/90147402110.pdf
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/vejiga_neurogenica_manejo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/silit.pdf
    • https://cdn.shopify.com/s/files/1/0441/1251/1128/files/negative_prefixes_adjectives_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/4692/0615/files/43242149811.pdf
    • https://cdn.shopify.com/s/files/1/0440/4301/0198/files/positioning_strategy_journal.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066c4.bin
6fa5f829e72d44fd3c90f32979e0d8a21afca6568c4524e9be2252f3b3c04805
pdf-font-stream PDF embedded font (sfnt) at offset 0x66C4 5276 bytes
font_01_sfnt_off00007891.bin
3fe94c428e3b1f1b37c4e3553cbf824b809b0c5bf04cefd8a76af3a23a66b064
pdf-font-stream PDF embedded font (sfnt) at offset 0x7891 10024 bytes