MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a large number of embedded links, many of which point to a malicious redirector hosted on 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and keywords related to industrial boiler maintenance, suggesting a lure to trick users into clicking the malicious link. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a known malicious URL.
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/pify?keyword=mantenimiento+de+calderas+industriales+pdf
- http://files.larosegc.com/uploads/1/3/1/4/131438211/4837902.pdf
- http://kewubu.parchmentvalley.org/uploads/1/3/1/0/131070302/65994.pdf
- http://xowuwu.jingyouecon.com/uploads/1/3/0/7/130740206/tujokuratedexu.pdf
- http://files.poconolakewesleyan.org/uploads/1/3/1/6/131607522/fowutilog.pdf
- http://lupawu.boardsandcompany.com/uploads/1/3/0/7/130776873/7870715.pdf
- https://cdn.shopify.com/s/files/1/0430/6573/7370/files/24138071021.pdf
- https://cdn.shopify.com/s/files/1/0431/5276/9192/files/91720265661.pdf
- https://cdn.shopify.com/s/files/1/0432/3803/1518/files/nuzavuvobuxurejotib.pdf
- https://cdn.shopify.com/s/files/1/0433/1077/6478/files/cypriot_grain_salad_broadsheet.pdf
- https://cdn.shopify.com/s/files/1/0451/9323/2535/files/gazesagifokajizurasi.pdf
- https://cdn.shopify.com/s/files/1/0431/6931/7020/files/blank_outline_map_of_europe.pdf
- https://cdn.shopify.com/s/files/1/0433/4757/4949/files/52568885104.pdf
- https://cdn.shopify.com/s/files/1/0427/5427/7532/files/kumesadufifu.pdf
- https://cdn.shopify.com/s/files/1/0428/5235/2156/files/cannibals_all.pdf
- https://cdn.shopify.com/s/files/1/0434/8457/7956/files/viwesedokafilesiwuragat.pdf
- https://cdn.shopify.com/s/files/1/0429/5147/5351/files/86842918398.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_off00006b5a.bin58fb29382409357ef4d15ef363df92a76b3072232c54f0d1056e8a736ca6c693 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B5A | 5304 bytes |
font_01_sfnt_off00007d4d.bin4fa95a1786aa3728ef0b358fc9120535f6331dfbf9ef0df2fae550764ba6c245 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7D4D | 11664 bytes |
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