Malicious PDF — malware analysis report

Static analysis result for SHA-256 586ee2c58285bf66…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 11:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 057711631d1af32b6d935fb49654ab45 SHA-1: be6f2309c0075ae7a3f5e29e46bee1e907f36b18 SHA-256: 586ee2c58285bf66dc68f88f9fc230c787d5cbfa04cd5c3e592df43d261fd22f
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.ru, disguised as a driver download. This is further supported by the PDF_SEO_LINK_FARM heuristic, indicating a large number of similar links. The document body contains text related to 'Intel cs330 driver windows 7' and includes the malicious URL, reinforcing the lure.

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.ru/wix?keyword=intel+cs330+driver+windows+7
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/71401863769.pdf
    • https://cdn.shopify.com/s/files/1/0463/1756/8157/files/ayushman_bharat_yojana_list_up.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/35499533704.pdf
    • https://static.usrfiles.com/ugd/735189_38eda1fddae848d2b81b65b86cdc67ea.pdf
    • https://static.usrfiles.com/ugd/d63aaf_4eb1d118877f45558d6ee1c92dc2d363.pdf
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/charades_app_que_soy_yo_premium_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/89364807415.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/58087192067.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rodupenewizaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4839/files/ringtones_for_iphone_6_plus_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/6653/8649/files/71948197268.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7475/files/49169230446.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_off00006a3f.bin
25f21a08bdbfbc15d85bc3fb81f22158f90a13caa8053961eeaa5ef7ca2739d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3F 5200 bytes
font_01_sfnt_off00007c11.bin
a43141fa70a7e1bbb1a280733269e9f51c19c000422eb037957742897114e2ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C11 10184 bytes

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