Malicious PDF — malware analysis report

Static analysis result for SHA-256 84fd7ad335f14677…

MALICIOUS

PDF

52.4 KB Created: 2020-09-01 03:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d36039d58125198d851d0b96323b764 SHA-1: 19b691af2d6c78a4ef5f732d2787b4c93b439715 SHA-256: 84fd7ad335f14677d3278717af0f845669c06c93e8c7da0d998cd33ae5311cef
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 critical heuristic firing for a malicious redirector link to 'https://ttraff.cc/wix?keyword=roman+catholic+high+school+philadelphia+uniform'. This indicates the document is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains the same malicious URL and numerous benign-looking PDF links, likely to mask the malicious intent.

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/wix?keyword=roman+catholic+high+school+philadelphia+uniform
    • https://static.usrfiles.com/ugd/22bf55_b137f28689c344bfa75d738fd6973c8d.pdf
    • https://static.usrfiles.com/ugd/3826db_2c180c860c6e451a8d0469bd9b47b1c3.pdf
    • https://static.usrfiles.com/ugd/f3cb45_39cd45441da34409884ef966c716c542.pdf
    • https://static.usrfiles.com/ugd/921909_fac8de36dc0f449cb53ac188ea82b1c0.pdf
    • https://cdn.shopify.com/s/files/1/0432/6172/2788/files/3862459330.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/54866360889.pdf
    • https://cdn.shopify.com/s/files/1/0434/7710/6838/files/pipipatujexada.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/52590374589.pdf
    • https://cdn.shopify.com/s/files/1/0429/6146/9596/files/24030147847.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/39900486912.pdf
    • https://cdn.shopify.com/s/files/1/0429/3338/7420/files/pathology_anatomy_atlas.pdf
    • https://cdn.shopify.com/s/files/1/0437/9190/9025/files/c_est_et_il_est.pdf
    • https://cdn.shopify.com/s/files/1/0430/6072/3865/files/20347302553.pdf
    • https://static.usrfiles.com/ugd/e3ff21_81549dd43c0f490f95d417c847c5c561.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ac059802fc34f08872ac0a45fc587c4.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_off00008b32.bin
45a25582dbbf6f091a3f3a1c7454f65b5896026c432080e3ef88835ab8c7fc89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B32 5576 bytes
font_01_sfnt_off00009e02.bin
1d03bec9cee6e7252e52dab28121db2c4628dfe928828d85f19a8d7fea0a7670		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E02 11292 bytes

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