Malicious PDF — malware analysis report

Static analysis result for SHA-256 2001e50344346166…

MALICIOUS

PDF

44.2 KB Created: 2020-09-01 08:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8854945756fbe221dfb56fe15ddd11d1 SHA-1: a23c988e7fa16fe518c948ec27f7a7be456d56de SHA-256: 2001e503443461666b27b9837680916f6e6bd6488d052098008728f5882f3306
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF documents. One of the primary links directs to a known malicious redirector, 'ttraff.cc', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF links, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious content.

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.cc/wix?keyword=bepantol+creme+bula+pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/rudifekopolakamefewewepod.pdf
    • https://cdn.shopify.com/s/files/1/0450/4210/6518/files/pabupexibov.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/41468425096.pdf
    • https://cdn.shopify.com/s/files/1/0434/8873/9494/files/carillion_collapse.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/sujets_de_bac_maths_terminale_s_algerie.pdf
    • https://static.usrfiles.com/ugd/b8c837_d969027c05e04a7fa4151f0be6228258.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c69bdd5ea6641f28ed114ab42664ee6.pdf
    • https://static.usrfiles.com/ugd/21a131_b370465a23f8474da4edd1c36075f45b.pdf
    • https://static.usrfiles.com/ugd/3aee12_84dd98fcc9854ad4b42b83e1cbc71037.pdf
    • https://static.usrfiles.com/ugd/b8c837_80314a30d10c4facaac57f5f2912e18e.pdf
    • https://static.usrfiles.com/ugd/f7fbc8_5a9366e3c5bf42e8b7250a89492d0546.pdf
    • https://static.usrfiles.com/ugd/6f53d7_82ababeff3b44e7a9a11e6f22eb040de.pdf
    • https://static.usrfiles.com/ugd/b8c837_506ecb35fdbd4189b8bc2a72fbc73606.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_off000066bb.bin
0ee71bab3f4819f6b0825a23594dd417b2aeb884b6591658c7de2961c0a9b7b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66BB 5312 bytes
font_01_sfnt_off000078b2.bin
bb4c562ce2047d13d69debc78e7d98c16affb4f9f70640a7579a3205a551d124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B2 13632 bytes

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