PDF malware analysis — malicious · ceb4d7fe18662c0d

MALICIOUS

PDF

44.7 KB Created: 2020-09-03 00:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 361ed4eaa827f9a1501a92dc5091647e SHA-1: c292da9f719d20c084349807f65efdf3c07e18df SHA-256: ceb4d7fe18662c0d9c4dc4f1d6ddb7417eb3a9cd913b6e237185d3e04cb6d473

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link disguised as a VMware Player download, which redirects to a malicious domain (ttraff.cc). This is further supported by heuristics indicating a malicious redirector link and a link farm. The ML classifier also strongly flagged this PDF as malicious. The document body contains obfuscated text and URLs, including the malicious redirector and a benign-looking Shopify URL, likely part of a link farm to obscure the malicious destination.

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=vmware+player+14++filehippo
- https://cdn.shopify.com/s/files/1/0447/9628/0983/files/characteristic_function_of_a_set.pdf
- https://cdn.shopify.com/s/files/1/0432/3603/2680/files/99583114473.pdf
- https://cdn.shopify.com/s/files/1/0430/4551/9513/files/bejenuj.pdf
- https://cdn.shopify.com/s/files/1/0435/4582/1333/files/75431574339.pdf
- https://static.usrfiles.com/ugd/3b0c81_a50cf61dfaa64789a7d47324ff41d82c.pdf
- https://static.usrfiles.com/ugd/c63bf9_b3f7ed57b25e460b8e069e3a8ed12ccd.pdf
- https://cdn.shopify.com/s/files/1/0431/0145/4496/files/77208468139.pdf
- https://cdn.shopify.com/s/files/1/0431/0994/1415/files/system._data._sqlite_c.pdf
- https://static.usrfiles.com/ugd/d32f78_3457751fb53f47afacbedaaf6aec7ac2.pdf
- https://static.usrfiles.com/ugd/b916f4_d103699668a145d284fcf373672d25ca.pdf
- https://static.usrfiles.com/ugd/fd3290_64c6e2a72eef4bfc90ea1a4f6f060c72.pdf
- https://static.usrfiles.com/ugd/3aca14_e1a3b98bf2924f97adfe91b2c5edd444.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006f9c.bin` `bc029ce4d1e5a6ec6b7aa0a46cd71febbee2e51f435a7e282f2ff62a9a93060a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F9C	5260 bytes
`font_01_sfnt_off00008177.bin` `72c94aa2645b98ec7ef1fc6bc4f6d46c1ada2f64bf2978251964a60b3d878d59`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8177	10888 bytes

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