Malicious PDF — malware analysis report

Static analysis result for SHA-256 c33963d36c6073f8…

MALICIOUS

PDF

37.7 KB Created: 2020-08-12 20:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af841dd569ca472226c4e418d30805da SHA-1: cfaf42d0dbc145af1460bc2bb78dad01f35eade3 SHA-256: c33963d36c6073f81a0655169ef5fd55181b30315779f033d305b8fbf0c0f2e5
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm. One critical heuristic indicates a link to known malicious redirector infrastructure at 'https://ttraff.ru/wb?keyword=2100%20asanas%20pdf%20download'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous external links, many pointing to Shopify domains, indicates an attempt to obscure the malicious destination and potentially leverage legitimate platforms for hosting or distribution.

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/wb?keyword=2100%20asanas%20pdf%20download
    • http://files.stephgardner.com/uploads/1/3/1/8/131858287/popij-zusinivafabejok-mupurirituxud.pdf
    • http://lesesubov.bebeyeend.com/uploads/1/3/0/8/130814328/kurubavusekila.pdf
    • http://jukut.mercyhandsworth.co.uk/uploads/1/3/0/9/130969103/tuwobolimusadog.pdf
    • http://files.courtneybeardall.com/uploads/1/3/2/3/132303382/lamikidexasozodit.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1125/files/67965227236.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/vubikenusodarofiluvabep.pdf
    • https://cdn.shopify.com/s/files/1/0435/0840/0280/files/samsung_refrigerator_troubleshooting_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/36873966576.pdf
    • https://cdn.shopify.com/s/files/1/0438/4138/8704/files/gifunetudiro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdf
    • https://cdn.shopify.com/s/files/1/0437/6412/1749/files/mijagaziwike.pdf
    • https://cdn.shopify.com/s/files/1/0435/8258/7039/files/fawikinojiva.pdf
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/free_full_javascript_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0436/0300/1502/files/55187163667.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_off00005688.bin
635b46281b174dc1da23ce57ae685f2e24f125bb3442a2384d8df462bbe099f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5688 5260 bytes
font_01_sfnt_off0000688b.bin
68a4c84ce8796d93b160bb2dcf9fb4ed14cbb6884f102d74030f8b5bf30b77be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x688B 9888 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.