Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d3e289951f2ebe…

MALICIOUS

PDF

43.1 KB Created: 2020-08-16 15:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b05ff1ca66321579ebb0456f9d526e1 SHA-1: 493bd64529e796ec6cf75b0e01d5a8fd69f710cf SHA-256: 41d3e289951f2ebea903ddff66d6ec7b1321687b756d5988cf77146fba3df152
128 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'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm for SEO poisoning or traffic generation. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=emulator+android+game+free+fire
    • http://tokaf.avoiceforkids.com/uploads/1/3/1/8/131871590/214ea1fcd8.pdf
    • http://kodiva.noseyroseytiedye.com/uploads/1/3/1/4/131455463/jomatitat.pdf
    • http://joloza.sustainablepetfoods.com/uploads/1/3/0/9/130969953/1660e3.pdf
    • http://fabeb.ebcentre.co.nz/uploads/1/3/1/3/131381167/nagodow.pdf
    • https://cdn.shopify.com/s/files/1/0438/1098/0000/files/caracter_bipolar_y_enlaces_intermoleculares_del_agua.pdf
    • https://cdn.shopify.com/s/files/1/0433/0396/0731/files/cemal_sreya_gl_iiri_incelemesi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/thyristor_basics.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/64599988090.pdf
    • https://cdn.shopify.com/s/files/1/0431/9988/9569/files/dubakefuxirapiloledu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/57375128672.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/career_paths_electronics_chomikuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0305/2191/files/past_simple_and_present_perfect_exercises_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/upsssc_assistant_accountant_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/archicad_23_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/tratamiento_brote_esclerosis_multiple.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_off00006ae7.bin
b1b903d0a1e710ba681ac2a36f9bfe9e9b1b452eef18c119f1c3239a0be66be9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE7 5004 bytes
font_01_sfnt_off00007bd5.bin
25db36f6579da3ff9b23e6029eabc0750ea05ea46908c21552cd7a2ac9728811
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD5 10556 bytes