Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f845e8705edd3fc…

MALICIOUS

PDF

45.2 KB Created: 2020-08-20 05:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e45ab4dbf439670534b4e0b9128eeff SHA-1: 7012347715be3e27a4b2af0192956bdfec457866 SHA-256: 1f845e8705edd3fc6d47562c2f72a3004976b6b2019def53c6ce90a9ab53077b
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.ru. The document body, though partially garbled, contains the search query '2011 chevy equinox manual shift not working', suggesting a lure to attract users searching for technical information. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content or phishing pages.

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=2011+chevy+equinox+manual+shift+not+working
    • http://files.slwellness.info/uploads/1/3/0/9/130969434/af9dd7.pdf
    • http://files.leedschiefsihsc.com/uploads/1/3/1/6/131637658/tabasapo_wubemobexemi_litevo.pdf
    • http://kinar.fcwomenandfamilyshelter.org/uploads/1/3/1/8/131871478/4faeb4e.pdf
    • http://files.kearneyworks.org/uploads/1/3/1/0/131070678/4319461.pdf
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/xaguwid.pdf
    • https://cdn.shopify.com/s/files/1/0432/8243/2160/files/homewood_al_zip_codes.pdf
    • https://cdn.shopify.com/s/files/1/0433/9266/3702/files/kiwevovo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/26615689788.pdf
    • https://cdn.shopify.com/s/files/1/0436/1243/8685/files/mulinizagevilebeluja.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6502/files/67295507714.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5968/files/5159393415.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_off0000613c.bin
1a7b18775ac6990ce3e09c29e26e936190a0a1e0243b3e6a5af58cceff752fb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613C 5920 bytes
font_01_sfnt_off0000754f.bin
6b445801c70cd63814e7dcb3b7886eed9afc27ce69a57060b9fd1e7a700ba89d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 10720 bytes
font_02_sfnt_off00009a03.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A03 4324 bytes

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