Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbee7a623dc22725…

MALICIOUS

PDF

48.2 KB Created: 2020-08-26 15:19:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 959d40cc176351c907cc82479e4e1bc8 SHA-1: 110bdd6b2ba250e7e43dc1671a91ae2a5f0af2f3 SHA-256: dbee7a623dc22725103f41fd8581fceeeb3817e795b7d5276a4ba0182f48656e
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of a link farm heuristic indicates the PDF is designed to distribute multiple external links, likely for SEO poisoning or to spread malicious URLs.

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/pify?keyword=juegos+modificados+de+voleibol
    • http://files.italianstringsacademy.com/uploads/1/3/0/8/130874358/fekemazo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1066/9213/files/english_film_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/6474024953.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/carbono_anomerico.pdf
    • https://cdn.shopify.com/s/files/1/0440/6411/2805/files/estimated_cost_sheet_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/sotexurate.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/sigebis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/38646532223.pdf
    • https://cdn.shopify.com/s/files/1/0433/6248/4383/files/58088216838.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/52141127474.pdf
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/73429383113.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/
    • https://cdn.shopify.com/s/files/1/0440/6411/2805/files/estima

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cf4.bin
23177fecb12483aaf958e5234be1e087f7cd68ad03c6b92d942e9911cdf35f14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF4 5436 bytes
font_01_sfnt_off00008f67.bin
cae65b7be5c3bb66eb3f9ba0aca966998f108b3a551cce84f4882ed9b039e0c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F67 10656 bytes

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