Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1100966b03bc8c3…

MALICIOUS

PDF

35.9 KB Created: 2020-09-03 04:09:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0012b007f329f0281ea6c1e71f50fc0a SHA-1: 4cabbe4aa9f77bf5e5e1ecc079e1596df589dfc9 SHA-256: d1100966b03bc8c3657c366bd5e836015540cb7dfac287b17bb6d30e030231c1
152 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. Additionally, it exhibits a PDF link farm behavior, with numerous links to external PDFs, many hosted on shopify.com and static.usrfiles.com. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=malayalam+christmas+carol+songs+lyrics+pdf, confirming the malicious redirector. The primary intent appears to be directing users to a malicious site through a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=malayalam+christmas+carol+songs+lyrics+pdf
    • https://cdn.shopify.com/s/files/1/0432/3069/1496/files/97726867655.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/32173632392.pdf
    • https://cdn.shopify.com/s/files/1/0433/3476/2654/files/new_headway_beginner_third_edition_teacher_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2532/files/pugusijiluxojono.pdf
    • https://cdn.shopify.com/s/files/1/0436/2154/8194/files/5136218836.pdf
    • https://static.usrfiles.com/ugd/834936_1423f6b6ba7c4b828ddbdbc5346e8c17.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc382d467c754a869cd3d621bcb08ec2.pdf
    • https://static.usrfiles.com/ugd/8ab72e_1bcd0dd4da8b4efdac221495eb8329c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_356230d3c3694ca8af539d8cba9a1ce1.pdf
    • https://static.usrfiles.com/ugd/b910ae_cae9ed95a70b4fdeb2198501f7f1637d.pdf
    • https://static.usrfiles.com/ugd/760101_b0b4cee5bb9640b1972d361dc7cd7214.pdf
    • https://static.usrfiles.com/ugd/15cd4d_59e8bfed205444bb8ef9351366575716.pdf
    • https://static.usrfiles.com/ugd/c0b427_f01aa671797f42bfaae0ade44b26a62b.pdf
    • https://static.usrfiles.com/ugd/d9e9a0_5fc13ed9832b4b8f9593b21dd1c6dad6.pdf
    • https://static.usrfiles.com/ugd/94e5ef_57fa695a91db49d88862155891305190.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_a08983219aea47f59c0a84f48b416b81.pdf
    • https://static.usrfiles.com/ugd/72216b_daaf59b0ec0047749c7462ddeb026f1a.pdf
    • https://static.usrfiles.com/ugd/aa14a9_4e6348e8a6c3438da0e5e5b409b80443.pdf
    • https://static.usrfiles.com/ugd/b8c837_6109d0da593947988d5a3197125eb307.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_off00004e17.bin
6c721bdfb0403124d28ad423f885176bf1d4fcfefa14ec33ee514894bd372a3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E17 5676 bytes
font_01_sfnt_off00006153.bin
954b6ea0114ea0eb69494671a1ff69cbba7ea1395291b66ea5301a975e0aa374
pdf-font-stream PDF embedded font (sfnt) at offset 0x6153 9808 bytes