Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eaac300f1dfc835…

MALICIOUS

PDF

46.3 KB Created: 2020-07-21 17:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd0b6f225de52b4d365445fe95bac7a8 SHA-1: 50661f6d9264ac4270aa6a87db229ab183767c11 SHA-256: 1eaac300f1dfc8356edda0b7cb72665a828a2e13a4e3c8ac08c15b98c8f5af9a
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a search result for a product manual. This link points to 'ttraff.cc', a known malicious redirector. The document also features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to increase visibility. The ML classifier strongly indicates maliciousness.

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.cc/wb?keyword=hotpoint%20washing%20machine%209kg%20manual
    • http://files.jkmedina.com/uploads/1/3/0/8/130874338/ad34245b.pdf
    • http://files.empyreandanes.com/uploads/1/3/0/7/130738943/1535059.pdf
    • http://files.jeremysisselman.com/uploads/1/3/2/6/132695354/1c3d6f0ef1b.pdf
    • http://files.juliesenf.com/uploads/1/3/1/0/131069898/jeloragupave.pdf
    • http://files.northolmesjuniorschool.com/uploads/1/3/1/0/131070192/c0d11.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/50598116779.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/kizit.pdf
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/51537675880.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdf
    • https://cdn.shopify.com/s/files/1/0429/4167/7731/files/44966901595.pdf
    • https://jefukuvanowi.files.wordpress.com/2020/07/pobedexuvasovapovizuxeg.pdf
    • https://sexunuxegoso.files.wordpress.com/2020/07/76766655214.pdf
    • https://duwarezozaju.files.wordpress.com/2020/06/39739201252.pdf
    • https://jodadisak.files.wordpress.com/2020/07/gazotifasusele.pdf
    • https://zuxaxite.files.wordpress.com/2020/06/61825032841.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5312/files/30927034972.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/xetexun.pdf
    • https://cdn.shopify.com/s/files/1/0434/9037/7894/files/29664961144.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/xejelisu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98572357872.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/zirewepinevano.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78578063821.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/
    • https://cdn.shopify.com/s/files/1/0429/4167/7731/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075c3.bin
bcf5dac73ced9ab3a477b239dac58bb954067dab498ad2d56a60b6abc14f8dbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 5408 bytes
font_01_sfnt_off0000880b.bin
046ee97bf5659c55dc3ba1432cf59a6a41f85596e20c54b75abfd4e231b09668
pdf-font-stream PDF embedded font (sfnt) at offset 0x880B 10356 bytes