MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/wix?keyword=airserver+full+free++pc. The document body, though heavily obfuscated, contains references to the search term 'airserver full free pc', suggesting a lure for pirated software. The ML classifier also strongly indicated maliciousness.
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.ru/wix?keyword=airserver+full+free++pc
- https://static.usrfiles.com/ugd/f515ca_8810a9a8e1594e49bedeb86e8c8a8f13.pdf
- https://static.usrfiles.com/ugd/03ae60_f991ae44de604eb2b0eb245ac4754e31.pdf
- https://static.usrfiles.com/ugd/9ff9b8_835926d3f93a40628035b527b412b540.pdf
- https://static.usrfiles.com/ugd/ad2ade_57a8af5614bb4cb2919f30c7d1adb352.pdf
- https://static.usrfiles.com/ugd/69b86f_0b8c9dec7e394f0b8530d678ddd7c5a4.pdf
- https://cdn.shopify.com/s/files/1/0429/8765/1235/files/womoj.pdf
- https://cdn.shopify.com/s/files/1/0435/0767/9397/files/loraine_boettner_catolicismo_romano.pdf
- https://cdn.shopify.com/s/files/1/0427/8370/3206/files/21937885364.pdf
- https://cdn.shopify.com/s/files/1/0433/4390/4927/files/vanuzitatepanawomike.pdf
- https://cdn.shopify.com/s/files/1/0439/0017/4504/files/udp_tracker_istole_it_80_announce.pdf
- https://cdn.shopify.com/s/files/1/0432/0873/6927/files/dezelobatanoxodute.pdf
- https://cdn.shopify.com/s/files/1/0437/6703/8106/files/22516424432.pdf
- https://cdn.shopify.com/s/files/1/0430/9866/9220/files/pofujenawetovati.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_off0000830c.bin09aad22ac50c34177dca6d5b940fcb531060d772ae8182790741ce84ac94f884 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x830C | 4848 bytes |
font_01_sfnt_off000093a8.bin251e8c9bac8973b80300ebb8748291f1f502573b33a4d10b50c71dc9bb58fc79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x93A8 | 14196 bytes |
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