Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b214a781190f75…

MALICIOUS

PDF

70.7 KB Created: 2020-08-22 23:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75a6e28516256bd0d928d4920e8b914e SHA-1: e5f9b3e86adb79d4fd678167dc7b0337fb7319bc SHA-256: a0b214a781190f755cc13cf93d796b8b155f3ef70ceffd1d6d864be4a6d7e436
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, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure.

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/pify?keyword=glioblastoma+multiforme+stage+4+symptoms
    • http://files.moonheim.com/uploads/1/3/1/1/131164473/3968659.pdf
    • http://files.game.myworldrules.com/uploads/1/3/2/6/132683334/1277530.pdf
    • http://genofobu.tradingtreasurescrystals.com.au/uploads/1/3/1/4/131411806/8782009.pdf
    • http://files.pilipinohomes.net/uploads/1/3/1/4/131437174/4264769.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0486/files/26246576386.pdf
    • https://cdn.shopify.com/s/files/1/0434/0636/0730/files/gepuwabiguv.pdf
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/24677111078.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/81191250369.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8501/files/bolalesinumorufiwanala.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/60849456200.pdf
    • https://cdn.shopify.com/s/files/1/0447/5040/5783/files/jay_z_open_letter_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0437/3214/0186/files/advanced_computer_architecture_question_bank_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3645/0717/files/naruto_shippuuden_episode_77.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_off0000d797.bin
c234efe7f24024e24948d2ea4ac6a769a8f67ef35186bec7554d6767c3014283		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD797 5580 bytes
font_01_sfnt_off0000ea8f.bin
5cd8549ffc809dcde6187498b870233b48e0e2ed7cfae5d5b09798e7a1242ca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8F 10396 bytes

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