Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a07e5055ea220e9…

MALICIOUS

PDF

64.9 KB Created: 2020-08-29 14:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80cae6222d3ee29225adbc39b27c6289 SHA-1: 4cea028299702bc154238aaee16c4a90e6e432cf SHA-256: 1a07e5055ea220e943e543378d442f735d19af06c0401344cdd35b99b2aa9935
120 Risk Score

Malware Insights

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

The PDF file contains a link farm with 30 external PDF links, many of which point to static.usrfiles.com. One critical heuristic indicates a malicious redirector link to 'ttraff.cc', which is likely the primary malicious component. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=feit+led+bulb+review', suggesting a lure related to a product review to entice clicks.

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.cc/wix?keyword=feit+led+bulb+review
    • https://static.usrfiles.com/ugd/b8c837_1587aea5e0934618be9b5e73dd47a9df.pdf
    • https://static.usrfiles.com/ugd/b8c837_d387e0ed889c4da19f37f4ee07faba37.pdf
    • https://static.usrfiles.com/ugd/b8c837_52d883453f4549c5a4d7035657ecbeed.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f4329fbca514f19b89026caab24482f.pdf
    • https://static.usrfiles.com/ugd/b8c837_0936679e5e8f45da934086d05a081a7a.pdf
    • https://static.usrfiles.com/ugd/24853a_921dbbdeb80e45b3946d4828a64d5d06.pdf
    • https://static.usrfiles.com/ugd/9c43ec_6ed6c1e9dbc443c7956d591270cbdfa8.pdf
    • https://static.usrfiles.com/ugd/89064d_879452b369464ad6af127b2d541b7cff.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec67cc3a1201451396d892e0c2da5cc6.pdf
    • https://cdn.shopify.com/s/files/1/0448/3537/3213/files/at_command_hc_05.pdf
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/simizujupetonezukigosidip.pdf
    • https://cdn.shopify.com/s/files/1/0435/4143/0440/files/nafegitexa.pdf
    • https://static.usrfiles.com/ugd/89064d_e45e9960a53141a6b1ff3a87f5a98633.pdf
    • https://static.usrfiles.com/ugd/b8c837_5812db5b555941eab2015804c31a046d.pdf
    • https://static.usrfiles.com/ugd/b8c837_86fd3b4a1b0e47df8cd87c2ef50731de.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_off0000c270.bin
f4f2fe003e74fb753524dd425c4937911dde5e0bb3077499ddf2a3c7740038ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC270 4680 bytes
font_01_sfnt_off0000d278.bin
648712edd36505431e3ccc9dd06d230bd1d95bf05d0dfb83c1ccca499f8ef02c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD278 10752 bytes

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