Malicious PDF — malware analysis report

Static analysis result for SHA-256 33372eb6cc4f0e02…

MALICIOUS

PDF

42.4 KB Created: 2020-08-24 13:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 883fb9e05020f9a77990b33d52d2be6d SHA-1: 49af82f44e7f59c2e15113477b461054f329af3d SHA-256: 33372eb6cc4f0e02630198581f41cf6b920741834097890b7acdb0ed5a09ef05
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same suspicious URL. The primary intent appears to be redirecting the user to malicious infrastructure.

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=android+1+games+dead+target
    • http://rorupol.thecatsmeowtarotandtalismans.com/uploads/1/3/1/0/131070027/9267947.pdf
    • http://files.evolve-sg.com/uploads/1/3/0/7/130739910/rosef.pdf
    • http://vugufe.redeemerwestfield.com/uploads/1/3/0/9/130969060/07a9f.pdf
    • https://cdn.shopify.com/s/files/1/0430/4879/6309/files/18485242227.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/44578266326.pdf
    • https://cdn.shopify.com/s/files/1/0428/6965/3663/files/butubixunufibepeje.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/dovugopukaja.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/sufulovovuxulupuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/mafipiro.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/84753294428.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/puxumasurobu.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_off00006913.bin
87ded26bdf885bbaad1e5b65ac98b92d6915dd70f5c85739e0b6fc2a4cf1ac53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6913 5152 bytes
font_01_sfnt_off00007a82.bin
17a29c0d556b31100e244a358390b7f5d75c79a9fff352238d2f623a268df216		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A82 10180 bytes

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