Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cbebbc3c0a53f10…

MALICIOUS

PDF

50.0 KB Created: 2020-08-11 07:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf34e8e82e6c24cd07f66c2fb2d78522 SHA-1: f4bcc2809e4e65a24d8d0d018f87cab74d5d7d19 SHA-256: 3cbebbc3c0a53f10d36ed13a39c44aeaf0128da7bfa1268b0f66d3b5969690e1
150 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to Shopify domains, but one critical link redirects to `ttraff.com`. This redirector is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to lure the user to this site. The ML classifier also strongly indicated 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.com/pify?keyword=bhagavad+gita+full+text+telugu+pdf
    • http://files.cotoxguide.org/uploads/1/3/0/8/130874522/xepigaxezagol_sopafaw_didiwat.pdf
    • http://vilif.florabysk.com/uploads/1/3/2/6/132682883/gojeroduja.pdf
    • http://files.marrakech-guided-tours.com/uploads/1/3/0/8/130874276/wupam.pdf
    • http://files.divinehorsetack.com/uploads/1/3/0/7/130775297/gozagas.pdf
    • http://files.martymackenzie.com/uploads/1/3/1/3/131380966/bujipifatit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/8580774413.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/wufobipoze.pdf
    • https://cdn.shopify.com/s/files/1/0431/8075/3058/files/weketufoxunodumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/lubusufapebixivasazulusur.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/sharp_el-_1801v_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/69272537689.pdf
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/68416039049.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/2813867572.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/56846613010.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/wokivunijomas.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/42237739188.pdf
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/96169134097.pdf
    • https://cdn.shopify.com/s/files/1/0430/7274/9721/files/tipisukozemofilijo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/megasulinadamovaju.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/1/0432

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c80.bin
70549ec239a2d946c69ffadca65ee1808015ac152d5ef07ba0c140ef09b3e38f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C80 5204 bytes
font_01_sfnt_off00005e42.bin
52027d4c4354fa66ebb64a9ebb36625f863974b8180edf17a92288a9d5270e9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E42 25368 bytes
font_02_sfnt_off000096d7.bin
707e9bcf73138d76569e3b51be3e129f12ed7caac2dd100d563aecb981dda44d
pdf-font-stream PDF embedded font (sfnt) at offset 0x96D7 9620 bytes