Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9ff75f5932ad80…

MALICIOUS

PDF

46.3 KB Created: 2020-09-01 05:14:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8be6456dd3cac2625fc585d025492a1f SHA-1: c3a452d7afc4a80d2a0a97121c1922f241d832ba SHA-256: ca9ff75f5932ad800a1b4f3e8b56dfb9bdebfb02832691fc36867d44ca08ffd5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF_SEO_LINK_FARM heuristic indicates the document contains numerous external links, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

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/wix?keyword=el+materialismo+historico+libro+pdf
    • https://cdn.shopify.com/s/files/1/0444/6345/6423/files/increase_steam_download_speed.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/zupivazuwivekugemuwuwu.pdf
    • https://cdn.shopify.com/s/files/1/0447/4336/0663/files/11th_science_biology_book_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/nowoxobuko.pdf
    • https://cdn.shopify.com/s/files/1/0439/8075/1006/files/29184100326.pdf
    • https://static.usrfiles.com/ugd/405339_1089bd8404134919bb485bec2cac2bd3.pdf
    • https://static.usrfiles.com/ugd/b8c837_85196644eabb4488bdd8950c3fdd374f.pdf
    • https://static.usrfiles.com/ugd/07625c_e4c497660db746779a173fde1dedb093.pdf
    • https://cdn.shopify.com/s/files/1/0435/5581/5583/files/judakurujobexujotizizewu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/2020_calendar_2020_printable.pdf
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/70980753417.pdf
    • https://static.usrfiles.com/ugd/cb5dea_2ec7fb5d9ada4438ae6bc1d562f100b1.pdf
    • https://static.usrfiles.com/ugd/ed64d2_6131c065437f4107af1947924cd63721.pdf
    • https://static.usrfiles.com/ugd/0baf77_da90be35a791442b8792ce1425f272df.pdf
    • https://static.usrfiles.com/ugd/89064d_5ff15e4ba0874a58ab603191b7ce9fd8.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_off00007713.bin
53fadc25e1199f176b8bb3933070c7f9c38e26f9d3ae57de240925dc507876ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7713 5492 bytes
font_01_sfnt_off0000898c.bin
7953ba544b6417b550a236e6042192f255d3add7cc10f48d9dd6c236178043d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x898C 10584 bytes

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