Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d1c95489e6a998…

MALICIOUS

PDF

44.1 KB Created: 2020-08-30 00:57:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71af708c20b9187cef422552d36c1dab SHA-1: decc17cbab8924d5339150735f8be45be42ea483 SHA-256: a6d1c95489e6a9983ac4515037bd0d08a8a2d4a96e48780acc88fd4f87ba5104
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=boston+terrier+breeders+in+nc'. This indicates an attempt to direct the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily corrupted, contains the same URL, reinforcing its malicious intent. The presence of numerous embedded PDF links, as flagged by the PDF_SEO_LINK_FARM heuristic, further suggests a link farm or spamming operation.

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=boston+terrier+breeders+in+nc
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/chilis_menu_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/saroxebubosebiganedilori.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/tezenujawu.pdf
    • https://static.usrfiles.com/ugd/16a96a_575490ab0bc345639950f7b38c57a667.pdf
    • https://static.usrfiles.com/ugd/b8c837_605c73bb4fdf4a62acfc805c535965d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca74d9dd5a584ad8b942c1ef8aaa3821.pdf
    • https://static.usrfiles.com/ugd/b8c837_11284874b64c4b7fb20ec187282ca080.pdf
    • https://cdn.shopify.com/s/files/1/0435/7629/5592/files/allopathic_medicine_book_in_urdu_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0577/files/pedek.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/38668328991.pdf
    • https://cdn.shopify.com/s/files/1/0438/2402/1664/files/76404642799.pdf
    • https://static.usrfiles.com/ugd/09273f_74a9fa216a1e4ca1ad3b2148ce7ec292.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ee64cc5bdc248c58947aa9b94236728.pdf
    • https://static.usrfiles.com/ugd/b8c837_a25d2ea2402347baa32c25210f26d2f1.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a0b.bin
d6c279abd6361db0029a6e240391ee218b33ee4c4eb28a708b043607812676c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0B 4668 bytes
font_01_sfnt_off000069e5.bin
2d2c8adaef35d8396029f88b7c484ba3a1aaf3888bd2f932e629e8db797986e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E5 13564 bytes
font_02_sfnt_off0000957f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x957F 4324 bytes

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