Malicious PDF — malware analysis report

Static analysis result for SHA-256 318fc135bc60de8d…

MALICIOUS

PDF

42.9 KB Created: 2020-08-18 13:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 542e6fddf135122d5473a173473e6a3d SHA-1: a06dae2362797b392e7a882e1041056b45551f1c SHA-256: 318fc135bc60de8d149e040aac2181e786f9b3111392fefddb1d6aa24776ca20
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL embedded in the document body. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link https://ttraff.cc/pify?keyword=software+reliability+engineering+john+d+musa+pdf is known to lead to malicious infrastructure. The document body itself is heavily obfuscated but contains references to the malicious URL and benign-looking Shopify URLs, likely as part of a SEO-based lure.

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=software+reliability+engineering+john+d+musa+pdf
    • http://files.gsnh.org/uploads/1/3/0/8/130874246/7603966.pdf
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/12236922535.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/wujagome.pdf
    • https://cdn.shopify.com/s/files/1/0437/0399/2485/files/vulimevujibow.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/ugk_player_anthem.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/86627211440.pdf
    • https://cdn.shopify.com/s/files/1/0439/1046/3643/files/xawabutemavazobemakujafub.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/76088211320.pdf
    • https://cdn.shopify.com/s/files/1/0432/3996/4834/files/cpr_guidelines_2018.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/arrow_learning_by_doing.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/brevet_2020_sujet.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/mogotize.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/58161350192.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/que_significa_aneurisma.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006507.bin
19664a827f5ad7801a8d0ca88941c52238b279facdd32fee46e645e42230cd08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6507 5968 bytes
font_01_sfnt_off00007934.bin
fb581586bdb7faafad9cb3e917197ba7bf37b6c8c7170ea295935940f7d55e82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7934 10860 bytes

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