Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dbf26345f3b6889…

MALICIOUS

PDF

44.7 KB Created: 2020-08-31 10:02:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 803312ac0ae9e35f06814f2bc964ba12 SHA-1: 22ec79b86cd95a71af98f20b67ce09504c2b18b7 SHA-256: 8dbf26345f3b68899e7da2ceb16f422da5dad0c8b2ad36b152a7b5a3e1d24f9c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the same URL and other Shopify links, suggesting a lure to download content. The primary malicious URL is used to redirect users, likely to a site hosting 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/wix?keyword=chronicles+of+darkness+core+rulebook+pdf+free
    • https://cdn.shopify.com/s/files/1/0464/2711/1576/files/97290889781.pdf
    • https://cdn.shopify.com/s/files/1/0435/3658/0757/files/87452653388.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/mandated_reporter_translated_in_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0435/2491/5359/files/breast_cancer_questionnaire.pdf
    • https://static.usrfiles.com/ugd/e2c250_9f1c81a7e2cf4fdba8ea47aed1965a15.pdf
    • https://static.usrfiles.com/ugd/defcb2_2e377b9a87d44cea99e760539c86086b.pdf
    • https://static.usrfiles.com/ugd/271e65_fb122c4fb9f74f898d308137461e5668.pdf
    • https://static.usrfiles.com/ugd/b8c837_90c24482204c473f90c40cffbede2358.pdf
    • https://static.usrfiles.com/ugd/4725f1_ad65ac402f234510a784b1f98f4cae73.pdf
    • https://static.usrfiles.com/ugd/c068f8_454078e0927444af8e156a0d8064ac4c.pdf
    • https://static.usrfiles.com/ugd/d5cf39_8246d5c12e6443078d57ed2160d7394e.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_cb8b8420856545d29bb73876bc144987.pdf
    • https://static.usrfiles.com/ugd/83b1b3_05ffb63a161d49a5aeff8e6dfd1406d3.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_off00006b06.bin
997feac3c1f26c0cf4280f0cbc53b770d11f707079dcb467607fec397198b4c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B06 5352 bytes
font_01_sfnt_off00007d25.bin
7a0e35f7047f78156ab6797b244ed55a24f2291db4d62670704ae7b6828c5d23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D25 12736 bytes

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