PDF malware analysis — malicious · fc706c61b0c005ba

MALICIOUS

PDF

52.1 KB Created: 2020-09-11 17:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a964feb6e886b328d59475d9ad2df566 SHA-1: f3412744e2095d6b81454def5327ab354899ee0a SHA-256: fc706c61b0c005bae059030ecd9fdab4f7295eb0def93ccbdc175c9b3c845a74

150 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, specifically pointing to 'https://ttraff.link/pify?keyword=sacramentos+catolicos+materia+y+forma'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'static.usrfiles.com'. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the attack pattern.

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.link/pify?keyword=sacramentos+catolicos+materia+y+forma
- http://files.coast1031.com/uploads/1/3/2/8/132814930/8558260.pdf
- http://files.honeybeesweetery.com/uploads/1/3/1/6/131608037/xisuvuluzegomu.pdf
- http://files.tronnyverse.com/uploads/1/3/1/3/131379832/3120356.pdf
- http://zoxuk.darwinwaterfrontholidayapartments.com.au/uploads/1/3/0/7/130739956/93901699027.pdf
- https://static.usrfiles.com/ugd/62e2c1_132d4182091348fba7053d2ef66f627f.pdf
- https://static.usrfiles.com/ugd/ef7b09_187b313b540b4901b6f0339b13c1106b.pdf
- https://static.usrfiles.com/ugd/d7c203_8e71705117144cd1bbd85fe7b64fea65.pdf
- https://static.usrfiles.com/ugd/7c3584_0e4c0877fadb40b788a640077611c06b.pdf
- https://static.usrfiles.com/ugd/34e21e_f4fcf212fd634588b6632b33bfd39120.pdf
- https://static.usrfiles.com/ugd/24d943_cc466a25dc314f84aa0cb721a63f93a3.pdf
- https://static.usrfiles.com/ugd/c3f88d_87757e42bf864f65b900344e00820eb7.pdf
- https://static.usrfiles.com/ugd/82e28d_bdbbbaa0d93c4e26bb5f33ed567fe0cb.pdf
- https://static.usrfiles.com/ugd/76de1a_2d24f568b70a43f2a815940852e49054.pdf
- https://static.usrfiles.com/ugd/685707_fa9ceb26abb9486ca1d726d91ee7eee4.pdf
- https://static.usrfiles.com/ugd/5b604d_a95f5e12fbe3427a9e01391854faa3dd.pdf
- https://static.usrfiles.com/ugd/e1d12c_71bc2b90310b450a8addb08f2e032f85.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/
- https://static.usrfiles.com/ugd/76de1a_2d24f568b70a43

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008e9e.bin` `d883274c723a3e668c0a5f005a5645f347ac4a4a4d1f84ea1955b05c48911a33`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E9E	5232 bytes
`font_01_sfnt_off0000a05c.bin` `b11ed75870c16c8a8146c0599f1a92ba24305f2a73656bbf1012eba320e01180`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA05C	10200 bytes

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