MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/wb?keyword=cuda%20c%20programming%20guide.pdf. Another heuristic indicated a PDF link farm, suggesting a coordinated effort to distribute malicious links. The document body contains a mix of what appears to be document titles and embedded URLs, further supporting the link-based attack vector.
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/wb?keyword=cuda%20c%20programming%20guide.pdf
- http://files.adamramey.com/uploads/1/3/1/4/131437834/jajulemefobuxufefu.pdf
- http://files.amygerak.com/uploads/1/3/2/6/132681492/budis_xofiradobisiko.pdf
- http://files.handsofhopegallup.com/uploads/1/3/0/8/130873826/6359311.pdf
- http://files.senatorscycling.org/uploads/1/3/0/7/130739147/6015718.pdf
- https://cdn.shopify.com/s/files/1/0431/4211/9592/files/apparatus_used_in_chemistry_laboratory.pdf
- https://cdn.shopify.com/s/files/1/0429/4855/9004/files/finadezokodazux.pdf
- https://cdn.shopify.com/s/files/1/0434/3277/1734/files/medical_genetics_book_download.pdf
- https://cdn.shopify.com/s/files/1/0437/0815/4008/files/moburobilisam.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26384136461.pdf
- https://cdn.shopify.com/s/files/1/0428/9767/0303/files/nanomaterials_lecture_notes.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bisadugizutojaririxenudep.pdf
- https://cdn.shopify.com/s/files/1/0434/3015/0309/files/95438929377.pdf
- https://cdn.shopify.com/s/files/1/0440/9124/4696/files/15664246062.pdf
- https://cdn.shopify.com/s/files/1/0431/1898/5372/files/nimowukad.pdf
- https://cdn.shopify.com/s/files/1/0429/7841/0655/files/69314868044.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_off00007432.bin595c35d7672e0b4ede0615243834cbebf85f0b6c8a84324b0b81078c952f8a44 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7432 | 5204 bytes |
font_01_sfnt_off000085d5.binf8b255a7ab8e53e5cb601f6d83d0f179e57403bb60d455ac97ec08e54ba6d52c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x85D5 | 13228 bytes |
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