Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5a348edd625d34…

MALICIOUS

PDF

53.1 KB Created: 2020-08-17 07:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e0862f512cff4f2e856d640512e6cdf SHA-1: 275b21659d8b3e8efe6f067cdbaa5a4fdb4bb807 SHA-256: 8c5a348edd625d34a7fdab3332c1c4bdc6c1af0af2d05b25f6998b4d2b537806
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 link farms and phishing lures. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to a drug guide and the malicious URL, suggesting a lure to a potentially harmful site.

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/pify?keyword=oxybutynin+davis+drug+guide
    • http://files.thefoodiemum.com/uploads/1/3/1/4/131406735/04c9c1c40a80.pdf
    • http://files.asbestosmasters.com/uploads/1/3/1/4/131453817/tetepojubejuniven.pdf
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/tenurar.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/wafamapidijolivaza.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/10147252295.pdf
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/69873669362.pdf
    • https://cdn.shopify.com/s/files/1/0431/7433/0517/files/wolf_team_hack_2015.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/zisasegomiwegin.pdf
    • https://cdn.shopify.com/s/files/1/0438/2323/5234/files/embankment_dam.pdf
    • https://cdn.shopify.com/s/files/1/0431/3602/4742/files/xixadovepol.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/79435870231.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c2e.bin
b365f6120ce7fa33ba5afa3f95e2482c3f18961cb7e399df8c5bbf53b91c7d22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2E 5128 bytes
font_01_sfnt_off00007dac.bin
201763c20eb92c959ac7bc85265464284f125c1f3a84772e7bbbfe7758f1cd49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAC 11276 bytes
font_02_sfnt_off0000a448.bin
9759ce8d6b03285eaaf0b3a467cae172b6556f7d7d175f3d646a9f0b73e2040d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA448 16160 bytes
font_03_sfnt_off0000b959.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB959 4324 bytes

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