PDF malware analysis — malicious · 73e60c18b17bfee8

MALICIOUS

PDF

40.8 KB Created: 2020-08-30 19:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 51260cde2ef224e0f2e93edf003f0c83 SHA-1: 91285707ee6b00d0ed8a7355d965745d9914b2bd SHA-256: 73e60c18b17bfee8d012a2aae29e5d56b78d81fdc2845433b073c528b427d23a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, including one identified as a malicious redirector. The primary malicious link, https://ttraff.cc/wix?keyword=kubota+l3400+service+manual, is designed to lead users to further malicious content. The document's structure suggests it is part of a link farm intended to distribute malware or phishing content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=kubota+l3400+service+manual
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/7314/2935/files/wugerumatojoxiza.pdf
- https://cdn.shopify.com/s/files/1/0431/2917/6232/files/the_new_encyclopedia_of_modern_bodybuilding.pdf
- https://cdn.shopify.com/s/files/1/0435/5325/9679/files/netbeans_vs_eclipse_performance.pdf
- https://cdn.shopify.com/s/files/1/0430/6914/5241/files/5394509802.pdf
- https://cdn.shopify.com/s/files/1/0432/5346/5243/files/how_to_make_nox_run_faster.pdf
- https://static.usrfiles.com/ugd/f46427_a4faef2e465b4c26ae0267adccf8edb0.pdf
- https://static.usrfiles.com/ugd/bfbc46_c5f360c413594465874e8bca87a90c92.pdf
- https://static.usrfiles.com/ugd/b8c837_6e43aeba9e79492dbf2cae5d68a824a9.pdf
- https://static.usrfiles.com/ugd/21e6f2_c9739306fbfd40a382f635ad27a67c44.pdf
- https://static.usrfiles.com/ugd/b8c837_ecbae893454846a49b35a5d79251e6c3.pdf
- https://static.usrfiles.com/ugd/b8c837_5d8179d1e34848bc88fe64cc0c54dca9.pdf
- https://static.usrfiles.com/ugd/93971e_49a786e243ac4ad7bd159e0e22bcb886.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006023.bin` `8768ba5139194d85df017438e04e7af3da5d6c448be03ec0eea6e6198f38639e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6023	5508 bytes
`font_01_sfnt_off000072cf.bin` `b73e7d8b1c768101c3b1577bed2398cb1ec7a8907e7ce0fba5a336e31831a472`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72CF	10540 bytes

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