Malicious PDF — malware analysis report

Static analysis result for SHA-256 27f077b53e616c83…

MALICIOUS

PDF

50.2 KB Created: 2020-09-02 08:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88064de7b2007728791877fc48b230e5 SHA-1: 316d604d17f19eaf6766f773779d1f106ee1c048 SHA-256: 27f077b53e616c83c68c89e63082a2509a08e89c945517bfc2fffb4cd3db7dc3
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it redirects to malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=blank+breakfast+and+lunch+menu+template', which is likely the lure. The PDF also contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDFs on static.usrfiles.com, suggesting a link farm or content stuffing technique. 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.me/wix?keyword=blank+breakfast+and+lunch+menu+template
    • https://static.usrfiles.com/ugd/8d57bd_ff617817f20443c7885c44388a4724df.pdf
    • https://static.usrfiles.com/ugd/23b571_fd6967a65ae641ecb3aeb9fcfeaa0fee.pdf
    • https://static.usrfiles.com/ugd/d2751c_8920e0db9fee43a38a63c0d54423a4ad.pdf
    • https://static.usrfiles.com/ugd/82e28d_bcf935234e36408b8d2155789f0d32e7.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_45c538dbcde64be984103c437c44a0a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe9df4e1fb954b29902d38cc3d2145f9.pdf
    • https://static.usrfiles.com/ugd/e948c1_111ea255ca594758b02c4e09368c237b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddb8f1ed66414db88a03d7d03a44ea1e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d432e32bd3b54e0988582ef2b3f4adce.pdf
    • https://static.usrfiles.com/ugd/c1c462_45a7b522abe9455eb33b997a8c40b101.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d0dcc6942254291ad08b1dd63b43c85.pdf
    • https://static.usrfiles.com/ugd/338562_92023d6ffb3a4fa98989930a324b1d77.pdf
    • https://static.usrfiles.com/ugd/b8c837_91f77b957d3846caad2053f2accffe7b.pdf
    • https://static.usrfiles.com/ugd/cdb50c_52025aa13b0649ab8ebabfe9947c1b90.pdf
    • https://static.usrfiles.com/ugd/cc03df_c7739a515a6347b9a33b18923f94a5d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_4060db543b9e41568b1b0c44969a966b.pdf
    • https://static.usrfiles.com/ugd/0c268c_cd1b90bf802c4d5990a88d42d9f1478c.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006771.bin
8c408e7f1a2db54b263f32424df98554538cee615db829563eae107ff4a7c66f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6771 5648 bytes
font_01_sfnt_off00007a73.bin
5f6c9f66b11322bcbb20b9bae1242d8812423e734102b067447015404b482bf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A73 2024 bytes
font_02_sfnt_off000083cf.bin
feb90cd91fb415dda6dca69d86e85af39c05425424b540b573fcb265fd9fa9b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83CF 9728 bytes
font_03_sfnt_off0000a550.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA550 16312 bytes

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