Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef726a587a6ac267…

MALICIOUS

PDF

32.5 KB Created: 2020-08-25 06:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81989e94ef62ed9aaac2d2af38751f0a SHA-1: ab4c68954bb7896786fb88865470052d5aabae83 SHA-256: ef726a587a6ac267fa930496a5fd3e79a019aba881896c0559706a641cb714d2
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing lures. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is further obfuscated by a keyword related to a movie. The document body, though heavily corrupted, contains the same movie-related keyword and the malicious URL, reinforcing the lure. The presence of a link farm further suggests a malicious intent to drive traffic to potentially harmful sites.

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=baaghi+2016+full+movie+free++filmyzilla
    • http://files.wardlawspoultryfarm.com/uploads/1/3/1/3/131397987/tofarekase-dadesuseguba.pdf
    • http://files.cpaforfamilywealth.com/uploads/1/3/1/1/131164573/631151.pdf
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/24837449415.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/90342552140.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/zojifekizimetewide.pdf
    • https://cdn.shopify.com/s/files/1/0429/1218/6531/files/geistige_behinderung_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/muworamobedu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/57603411204.pdf
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/kufaxiwe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/62958710410.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_off0000404d.bin
691b3caae8f0cc7d1df00b4688a240c88ff4568b15e79108866ebafa0149974b
pdf-font-stream PDF embedded font (sfnt) at offset 0x404D 5744 bytes
font_01_sfnt_off000053d8.bin
2933fe74f46946c3b7a0b4df9046b61850efbea35a2a25857cd7ee36a11c2d83
pdf-font-stream PDF embedded font (sfnt) at offset 0x53D8 9780 bytes