Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf41bda1c2d817c…

MALICIOUS

PDF

47.3 KB Created: 2020-08-04 03:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 930ad235b91626a82d8bb488c41178bf SHA-1: 3f90fbcd9da8486b0691e8cffe40f4bc8f30a739 SHA-256: fdf41bda1c2d817c48cd2b7aada2d70dbda0c4443dd0f13b610e8acebfee6324
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bonheur+d+occasion+pdf+gratuit'. Another critical heuristic flagged the PDF as a link farm, with numerous links generated for SEO purposes. The document body, though heavily obfuscated, also contains the primary malicious URL, suggesting a lure to a malicious site.

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=bonheur+d+occasion+pdf+gratuit
    • http://files.whatareyoupracticing.org/uploads/1/3/0/8/130814411/nowetesoxuje.pdf
    • http://naxifimu.iwtfilm.com/uploads/1/3/1/4/131454106/pogukuwo_dakawoli_nitolajoromul_nugupune.pdf
    • http://files.messianiclaw.com/uploads/1/3/2/3/132302871/lexovuf.pdf
    • http://files.georgestewartartist.com/uploads/1/3/2/6/132683111/da3157a24.pdf
    • http://files.integrate2inspire.com/uploads/1/3/1/4/131408439/pimavipawumedilijoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/28412436374.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/senufu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/sijexevaguful.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/tapivobereb.pdf
    • https://cdn.shopify.com/s/files/1/0437/1290/5370/files/tojexopodemugejafamegez.pdf
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/white_rodgers_1f80-_361.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/66411788536.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/divuxugavemepiki.pdf
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/74909881550.pdf
    • https://cdn.shopify.com/s/files/1/0438/4918/7493/files/3455586358.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/bofatuwulubitu.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_off000068cf.bin
9e28b3a35869d8398e73b4820cf6d38e4c81bb9f1f26657994b43244b3c851ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x68CF 5316 bytes
font_01_sfnt_off00007ad6.bin
331fa82a4e14c601eff1f057503219f2a4b0de38f98b3739be99f5c4d686e788
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD6 11988 bytes
font_02_sfnt_off0000a0a2.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A2 4324 bytes