Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6b8409ce8e5b49…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 20:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aa76bd8a4022948d68e903169e7717c SHA-1: 14ff281573155369bbfed11a27315576e7e86366 SHA-256: cb6b8409ce8e5b49fc718dddb280c0eef0f3d74645888754aa2f3f4c9982ea2b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to a URL that appears to be a lure for movie downloads. The document body, though heavily obfuscated, contains fragments of the same URL and other PDF links, suggesting a link farm for SEO poisoning or similar social engineering tactics. The primary malicious URL is https://ttraff.cc/pify?keyword=warm+bodies+tamil+dubbed+movie++tamilrockers, which is likely used to redirect users to further malicious content.

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=warm+bodies+tamil+dubbed+movie++tamilrockers
    • http://navedo.sweetwoodilstudies.com/uploads/1/3/0/7/130738890/986635.pdf
    • https://cdn.shopify.com/s/files/1/0435/0391/1076/files/rurodagowurivuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8726/files/76639378791.pdf
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/walajuwonanaxovu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/79895515862.pdf
    • https://cdn.shopify.com/s/files/1/0437/5199/7592/files/panage.pdf
    • https://cdn.shopify.com/s/files/1/0439/4038/0840/files/39950321446.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/52398544902.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/83378729388.pdf
    • https://cdn.shopify.com/s/files/1/0448/0860/1762/files/diluguzubafuvajapovu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/pumotujuxigiva.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_off00006f55.bin
8b10be308c3d7e8c319274853a98b1a7c48dbb98abbbae6f1355a4c13b4c8cc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F55 5364 bytes
font_01_sfnt_off00008184.bin
f5fc0c01a7bfff83642f762d71f3d8f0c467b54f996e2d5c7f3c657fe92b1a04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8184 10768 bytes

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