Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2de174d3bd91bee…

MALICIOUS

PDF

36.2 KB Created: 2020-09-02 03:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e8b86ea1c0666e31ee22935fd08a5a7 SHA-1: 66f39d6893fbc958242b54157a69af6a102a68d2 SHA-256: a2de174d3bd91beedb51d6415824dcd6f66844b1b6c41f40c4a85ba1cdcc7a87
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 a URL that appears to be a lure for Dungeons & Dragons players. The document body, though heavily obfuscated, also contains this URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which lead to benign content, likely 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.club/pify?keyword=d%2526+d+adventure+league+logsheet
    • https://static.usrfiles.com/ugd/0789d5_5b53f6fce1024788a2f2c3a5f42da484.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c4be4313a44495b99655cff6b94bfca.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_8ca01f4b15e544dd9d76cb674c483e11.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kividerinogofigizunewif.pdf
    • https://cdn.shopify.com/s/files/1/0432/7007/8617/files/fuvokubigulanuvuzin.pdf
    • https://cdn.shopify.com/s/files/1/0429/7539/5993/files/lanoginoriwojategopeved.pdf
    • https://cdn.shopify.com/s/files/1/0435/5935/4517/files/microsd_management_3ds_cia.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/4058002619.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e736227da9c45b5bb0b3c9fcb3d05c2.pdf
    • https://static.usrfiles.com/ugd/0e2875_41bffde7de2949768f242e33698ccf48.pdf
    • https://static.usrfiles.com/ugd/2ac701_7d5603b7b23b47fe97bf3167e45df835.pdf
    • https://static.usrfiles.com/ugd/c33cdb_e65c8fc2e4de4303ba159f83276b5edf.pdf
    • https://static.usrfiles.com/ugd/90423f_e68a1392cb4348af807b46de4ff6c3ec.pdf
    • https://cdn.shopify.com/s/files/1/0463/5466/1542/files/truchas_de_batata.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/fusionner_excel_vba.pdf
    • https://cdn.shopify.com/s/files/1/0450/6717/4040/files/tanzania_protected_areas.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/43208715668.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_off00005467.bin
5bcf7f318894cd8667f709bf970fa8c582a8027402ea75fdf14ac0e15260a4d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5467 4156 bytes
font_01_sfnt_off00006294.bin
c4a8b47bf1f2f98d4c36e3703c09efcaa2f021551f20d4bd1e8e280ba2a7f86f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6294 9876 bytes

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