Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca5709b91605b19b…

MALICIOUS

PDF

44.8 KB Created: 2020-08-30 08:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ae5292819d64f569ccb2a05b6d81619 SHA-1: c37a14f99da38d498e88af90e82533a4cc65c12b SHA-256: ca5709b91605b19b39f5740b475e0ea7760726376b62aa679e47ead0df58d025
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one heuristic identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.cc/wix?keyword=streaming+civil+war', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a lure to external content. No scripts were extracted, but the sheer volume of links points to a distribution or redirection strategy.

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=streaming+civil+war
    • https://static.usrfiles.com/ugd/804ff6_219257386c67409190673b9b8adee880.pdf
    • https://static.usrfiles.com/ugd/804ff6_08b222d98b0248619c3d3eefdcda3185.pdf
    • https://static.usrfiles.com/ugd/921909_c5ab0bc8b69446828fd8d4ef0533071f.pdf
    • https://static.usrfiles.com/ugd/4b7290_74fa62a22f514084ac739f299ff0c0e8.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_ca7defbd3c2f42bea9e33ad054d0e160.pdf
    • https://static.usrfiles.com/ugd/b8c837_48dc53febf4446e7a5fe830090f0ea75.pdf
    • https://static.usrfiles.com/ugd/c1615c_8c89ef34cfec491c8c3a2d6e0620961f.pdf
    • https://cdn.shopify.com/s/files/1/0466/8532/3428/files/91002180631.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://cdn.shopify.com/s/files/1/0462/2958/6069/files/ina_mays_guide_to_childbirth_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4553/5400/files/fuwusemimowetuzivep.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/jeep_grand_cherokee_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/56164419849.pdf
    • https://cdn.shopify.com/s/files/1/0430/0210/1923/files/kiwakumoduwiwexeri.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2341/files/chrome_for_apple_ipad.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_off00007243.bin
4f29dd9d8d13b516f64ed92d3442b9cb4df97a343f0d254efe32557070342796		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7243 5196 bytes
font_01_sfnt_off000083e7.bin
2dbeb7cffd8b360594082c87f9d8de0e9af4943f1a0869a13bbdc67e253ac368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E7 10184 bytes

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