Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60810964ea10494…

MALICIOUS

PDF

60.8 KB Created: 2020-08-12 03:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4974ac5d74b753541727fafb7f2406b1 SHA-1: a1faa71c9ca2952e73c37ee7633c42d371a49fd7 SHA-256: b60810964ea1049488ca1e92b8387f0c371fc5a652f3aa5be456a6af0f093b5b
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=exam+essentials+cae+pdf+vk'. This suggests the document's purpose is to redirect the user to potentially harmful content. The document body itself is heavily obfuscated and contains the malicious URL, further supporting this assessment.

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=exam+essentials+cae+pdf+vk
    • http://files.themindofmyron.com/uploads/1/3/1/4/131406507/5691931.pdf
    • http://lavape.cherylreed.com/uploads/1/3/1/8/131871674/rinofoxetevijokonevu.pdf
    • http://nikataxo.alittletheologyontheprairie.com/uploads/1/3/1/8/131856271/3785593.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/21709706910.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/93745407666.pdf
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/calibres_de_ptr.pdf
    • https://cdn.shopify.com/s/files/1/0432/9275/4076/files/sizasizus.pdf
    • https://cdn.shopify.com/s/files/1/0434/7117/5846/files/behaviour_modification_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/couple_compatibility_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/buxaleko.pdf
    • https://cdn.shopify.com/s/files/1/0438/7697/4747/files/9754446496.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/17077544306.pdf
    • https://cdn.shopify.com/s/files/1/0432/4186/5384/files/46778875747.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/jawinigavovovabonij.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/rukanabuxenuleravi.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/waziga.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_off0000ae32.bin
3af8f9c4614085d003fb7f04355f6a10d4d9326b06f89a74b7d27a1c2643bae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE32 5352 bytes
font_01_sfnt_off0000c067.bin
6c8d51ac8e275dae4f405a368a08755f1530cdbd3c6b7780b73b8679cc5865a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC067 11144 bytes

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