Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10d7b233c7d263a…

MALICIOUS

PDF

44.7 KB Created: 2020-08-08 05:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88aafef833ff2690e22eea805f3c6ffb SHA-1: 1ffb5b40e6846785629f0f1b5b32843a8aa6befd SHA-256: d10d7b233c7d263aa1f42612c72982a0cd7ea4e75d59c25c86500185c3de235a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=carrier+air+conditioner+brochure+pdf. The document body, though heavily obfuscated, contains references to 'Carrier air conditioner brochure pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious links. The presence of numerous links to Shopify-hosted PDFs, many of which are benign, indicates an attempt to blend malicious content with seemingly legitimate resources.

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=carrier+air+conditioner+brochure+pdf
    • http://files.sbafootball.org/uploads/1/3/2/8/132814768/kuzekajide.pdf
    • http://files.eveningshadeshibas.com/uploads/1/3/1/4/131483214/e926a6add.pdf
    • http://files.goacesfootball.com/uploads/1/3/2/8/132815015/vabutozadebemun-razaxikete.pdf
    • http://files.highflyerseducation.com/uploads/1/3/1/4/131453902/femaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/6447/3253/files/46609887800.pdf
    • https://cdn.shopify.com/s/files/1/0434/7691/0242/files/13914348185.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/mephis_bleek_round_here.pdf
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/69285963835.pdf
    • https://cdn.shopify.com/s/files/1/0438/3349/1606/files/food_adulteration_paragraph.pdf
    • https://cdn.shopify.com/s/files/1/0432/5795/4464/files/jajedokejove.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/95515724546.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/2091797644.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/gubupuvipavafe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/classical_mechanics_john_r_taylor.pdf
    • https://cdn.shopify.com/s/files/1/0440/6683/2534/files/78798025791.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/68044011723.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/korefax.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_off00007216.bin
8f012ebf9abb6871a2878d9c0bd4ff39bedecf62a40367fc632055df51353ade
pdf-font-stream PDF embedded font (sfnt) at offset 0x7216 5076 bytes
font_01_sfnt_off0000834d.bin
9735eb5b05e89185a4c9206b1f2bc94b293d683e9431fef3c4b3e52b25097063
pdf-font-stream PDF embedded font (sfnt) at offset 0x834D 10048 bytes