Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7891da9ad2e97bb…

MALICIOUS

PDF

48.6 KB Created: 2020-08-31 06:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 869fb03449c69db0c5c4dfd9846dabfc SHA-1: ca8fed9e72a47adceb62f41bee05b1b0c4a20918 SHA-256: f7891da9ad2e97bb41210cae1669da51e96ff28f7be5a40c2eb700534d0b35c2
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=freighter+or+offshore+trevor+heist, which is the primary indicator of malicious intent. The sample also exhibits a PDF link farm heuristic, suggesting it is part of a larger SEO poisoning campaign to drive traffic to malicious 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.com/wix?keyword=freighter+or+offshore+trevor+heist
    • https://static.usrfiles.com/ugd/0cd019_217650906f8d40b9b7e16656a3d3b94d.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a577b5f71754a2ab3083b9f44f42d16.pdf
    • https://static.usrfiles.com/ugd/ab63e3_4a5fdf7a3e3c41398a5a3d8ed5dd92cb.pdf
    • https://static.usrfiles.com/ugd/87fdc7_347027a7346f43d897de89b065c3c2ed.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0156/files/pdf_files_download_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0435/5542/2369/files/13283352198.pdf
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/84361957912.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/xolifineliji.pdf
    • https://static.usrfiles.com/ugd/b8c837_41ac5ccd51e14f04a62e0b6039b684e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f77f3978bc9f49548284d9b4015cb7ff.pdf
    • https://static.usrfiles.com/ugd/b916f4_aebd4a91dcdb42e2a1c5a833f825bf82.pdf
    • https://static.usrfiles.com/ugd/cc14e4_b639883a8b3544a4b6593d290d7773b5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073ad.bin
ad90e1fb01c34d76e2cc506556e52f5dfe27741a421f034da51fd8b5de74e553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73AD 4484 bytes
font_01_sfnt_off0000830a.bin
e551d6eb556bbf397d8b4ccc071cb37eaa7bb0067993fcad5958d8334ce6e8df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x830A 10744 bytes
font_02_sfnt_off0000a7b2.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7B2 4324 bytes

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