Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1702f148a6e004…

MALICIOUS

PDF

52.8 KB Created: 2020-08-06 20:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6aa4aa8f77d7852508a999495c6b1857 SHA-1: e27d2a09c6fd290489d147a32fa095f3e4167cee SHA-256: dc1702f148a6e0046fb105e1ac24baea939fbf203ccc11b75b5baf47dd1bdb5a
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates that the document links to a known malicious redirector infrastructure at `ttraff.ru`. The document body, though heavily obfuscated, contains text related to 'Tata motors aptitude test papers', suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=tata+motors+aptitude+test+papers+with+answers+pdf
    • http://files.chocolatiermatisse.com/uploads/1/3/0/9/130969211/1110496.pdf
    • http://xesixan.casafolklorica.com/uploads/1/3/0/8/130814058/5671deaefcc.pdf
    • http://files.porta.us/uploads/1/3/2/6/132682048/0206fbc573c80f.pdf
    • http://files.ode2oddz.com/uploads/1/3/1/4/131437402/bosodagomesizi-lomozobowopukiw.pdf
    • http://files.athenamckenziewriter.com/uploads/1/3/0/8/130814535/bitorexev-lasabomunoxeka-jidedeli-vupadobusadek.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/18266470696.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/89507778240.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/nalipisare.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/conflict_resolution_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0435/5555/3443/files/pikidevidadasidolu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/53861189619.pdf
    • https://cdn.shopify.com/s/files/1/0430/2854/5693/files/11046126967.pdf
    • https://cdn.shopify.com/s/files/1/0429/0235/6127/files/17900690876.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/logedupenopabovodusi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0922/6398/files/hunter_sailboat_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/97338446067.pdf
    • https://cdn.shopify.com/s/files/1/0429/0392/8991/files/2007_ford_focus_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/rexijiwipumawa.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/assembly_language_programming_8051.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_off00006fbe.bin
ff9f6ecb189e151133acfeb4f97360549eaf050db51fd3ea1222801d76af692f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBE 5288 bytes
font_01_sfnt_off000081a4.bin
96b558557341cfdde8119ff26b01a4294b13378c129d2e0f985ef41c55386520
pdf-font-stream PDF embedded font (sfnt) at offset 0x81A4 15044 bytes
font_02_sfnt_off0000b0ca.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CA 16092 bytes