Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d12c5ef708ac7e0…

MALICIOUS

PDF

54.3 KB Created: 2020-09-01 07:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bfd3d2e3a42c29ca581610ed10d89a0 SHA-1: 7bd9e44ebc4ca0b5f158e41ac493a2b0aeb74644 SHA-256: 9d12c5ef708ac7e0f4eaf09cef90c84e1481b7e6a2a117c1fd4c08b819f4265c
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 an attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of a PDF link farm heuristic suggests a broader campaign to distribute malicious content.

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=coffee+grinder+best+manual
    • https://cdn.shopify.com/s/files/1/0440/4789/2630/files/42776071694.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/57839610715.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/60968929978.pdf
    • https://cdn.shopify.com/s/files/1/0448/1276/3298/files/lg_smart_share_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/76520734249.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/77654119734.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_f98d907ae6214631aa692823a0e3e34b.pdf
    • https://static.usrfiles.com/ugd/76de1a_0fd892f8e672499295eb762c5331d076.pdf
    • https://static.usrfiles.com/ugd/67e251_8180c237f60c49a5abe40ff443c5997d.pdf
    • https://static.usrfiles.com/ugd/cf14a4_49ea903992a14f15b9df2a506e039ef0.pdf
    • https://static.usrfiles.com/ugd/e3c460_56629f60ab7d4223b0b31982fae6c783.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_off00009775.bin
91bf05694806d9d0a3ecc1ca79a7493101644a096607db302142bb4bef963679		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9775 5272 bytes
font_01_sfnt_off0000a94a.bin
5384a8ddd90e188b99d6e964d828e29a5cda12fbe64cb1c178ff8c6b9389665b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA94A 10324 bytes

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