MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=allison+mt643+service+manual'. The document body, though heavily obfuscated, contains text suggesting it is a service manual, which serves as a lure. The presence of numerous other PDF links, many pointing to 'static.usrfiles.com', indicates a link farm, a common tactic for SEO poisoning or distributing malicious content. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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=allison+mt643+service+manual
- https://static.usrfiles.com/ugd/b8c837_1786e8a9697c40ec83e66de10965cb1e.pdf
- https://static.usrfiles.com/ugd/b8c837_bfb518c5d59a49098f26597b10d0cccc.pdf
- https://static.usrfiles.com/ugd/9757e7_8ad28fa71346485f8a2157461315b0ed.pdf
- https://static.usrfiles.com/ugd/bf650e_98832bf8a5ca448ebb406dace0c363f8.pdf
- https://static.usrfiles.com/ugd/f0e51d_fec1a7c020ee424b8a5e7645f4e1643d.pdf
- https://static.usrfiles.com/ugd/10e3af_5eee6eb92fb04eeea707cf5ea7e4f179.pdf
- https://static.usrfiles.com/ugd/f0e51d_bb50b656e29c4c4b9a2c14445371ba86.pdf
- https://static.usrfiles.com/ugd/e3ed1f_0581921d7f334487a2d0e6cb538b7f29.pdf
- https://cdn.shopify.com/s/files/1/0430/9575/2858/files/marcapasos_tipos.pdf
- https://cdn.shopify.com/s/files/1/0438/0812/9185/files/cambridge_audio_dacmagic_100_manuale.pdf
- https://cdn.shopify.com/s/files/1/0433/4111/9653/files/python_for_data_science_beginners.pdf
- https://cdn.shopify.com/s/files/1/0436/0149/4178/files/cydia_impactor_apk_free.pdf
- https://cdn.shopify.com/s/files/1/0448/4952/8989/files/opencv_functions_list.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_off00005779.bina3740aeffb7a4fb3f1905fda3e863a37401f637bf8c1671d0b13c26d198b0714 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5779 | 5400 bytes |
font_01_sfnt_off000069c0.binad5250a02898f759cf68823b3f6b8f92680087388845cb5ad69502b30e2ce1d1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69C0 | 10688 bytes |
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