Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6c885a41c3f347…

MALICIOUS

PDF

43.6 KB Created: 2020-08-30 19:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3a1106f471b61048f86ec2b954d90ae SHA-1: 7b19d038ea62b6f2d072b385c8624bbe2be614f3 SHA-256: cc6c885a41c3f34725e4a85e623cd19f6dabbf89d4a15a1fd44999000b5b778d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be directing users to the malicious 'ttraff.com' URL, likely for phishing or malware delivery.

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/wix?keyword=g%25C3%25A9n%25C3%25A9rateur+de+mots+fl%25C3%25A9ch%25C3%25A9s+avec+imag
    • https://cdn.shopify.com/s/files/1/0429/8830/6586/files/bioremediation_is_a_form_of_conservation_called.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/canoscan_lide_110_program.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/fesutuxizezerobudiruxoguk.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/13939168292.pdf
    • https://cdn.shopify.com/s/files/1/0430/7809/0901/files/mebuzonevono.pdf
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/56853325060.pdf
    • https://cdn.shopify.com/s/files/1/0437/6985/6158/files/85479438684.pdf
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/32505942227.pdf
    • https://static.usrfiles.com/ugd/b8c837_b163dd7a12994e479ffc31d4ffef78a0.pdf
    • https://static.usrfiles.com/ugd/5be868_67f22ca943434e07ad308f91e6926eca.pdf
    • https://cdn.shopify.com/s/files/1/0437/4547/6762/files/ap_grama_sachivalayam_key.pdf
    • https://cdn.shopify.com/s/files/1/0461/9586/7797/files/vinamavuzokizitipenomu.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_off000065e4.bin
e602aa6f03a8ee1eddf87b0685be22801ae7cf7881aad49921fc0fadaaa5cb79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E4 5668 bytes
font_01_sfnt_off000078c0.bin
14f693466bccbe1920f1e7d4b9b1b7594039a9a1b065fe017d54a1a4d48a2de9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C0 12556 bytes

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