Malicious PDF — malware analysis report

Static analysis result for SHA-256 5863862944e4fe5a…

MALICIOUS

PDF

39.1 KB Created: 2020-08-22 15:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bd5a7ab96fb868a31052168373dec6d SHA-1: fa715cf34bc66b343b6c438775adb61b9758f3e0 SHA-256: 5863862944e4fe5aa2576c1e11ada5c7d3b28e51b4eb46360e216dc68517dbb2
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised with a seemingly relevant keyword. The document body, though heavily obfuscated, contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary malicious intent appears to be redirecting the user to malicious infrastructure via the ttraff.cc URL.

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=teacher%2527+s+guide+grade+9+science+pdf
    • http://files.expat-ations.com/uploads/1/3/0/7/130776326/negege-nowisuxum-kelutojuzofus-jesanilavotelew.pdf
    • http://files.guitarsam.com/uploads/1/3/0/7/130738568/3055598.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8659/files/89612454220.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/63875589444.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/begok.pdf
    • https://cdn.shopify.com/s/files/1/0449/0821/6487/files/bitumen_road_construction.pdf
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/ruxagajowek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdf
    • https://cdn.shopify.com/s/files/1/0451/2638/5829/files/android_5._1_1_games.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/18863476130.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/64952622392.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_off000059ae.bin
b720c3b314bcf714e1a5ab1900ea446776edea2191a5510832cc25f47652ea20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59AE 5524 bytes
font_01_sfnt_off00006c73.bin
282a66a08a48c06d346de2fb149fdf2af37a5d3fe1aa4ca9b7d831157ae6f34b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C73 10352 bytes

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