MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged by a machine learning classifier and heuristics indicate it contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or phishing attempt. The embedded URL points to 'ttraff.ru', a known malicious redirector. While many other URLs are present, they appear to be benign links to Shopify and usrfiles.com, likely used to obscure the malicious intent.
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=biocalculus+for+life+sciences+pdf
- https://static.usrfiles.com/ugd/ef7b09_da246c5821ec4036bd298992bd10a986.pdf
- https://static.usrfiles.com/ugd/05900a_d5d7bf35538d411f8ebd74ba96302e3d.pdf
- https://static.usrfiles.com/ugd/ceb2e8_0592d1421b034683874dfe452142080d.pdf
- https://cdn.shopify.com/s/files/1/0431/0417/4233/files/candlestick_patterns_meanings.pdf
- https://cdn.shopify.com/s/files/1/0452/6279/9005/files/jspdf_autotable_header_and_footer.pdf
- https://cdn.shopify.com/s/files/1/0432/1270/1860/files/14141401218.pdf
- https://cdn.shopify.com/s/files/1/0429/9689/1807/files/baba_yetu_choir.pdf
- https://cdn.shopify.com/s/files/1/0469/0840/7968/files/9302778317.pdf
- https://static.usrfiles.com/ugd/b8c837_57857feb91ca481c9a83f02965e15cfc.pdf
- https://static.usrfiles.com/ugd/8acad3_48d3f2d58ca94993ba57aaf1839072ed.pdf
- https://cdn.shopify.com/s/files/1/0431/6105/9482/files/77347574172.pdf
- https://cdn.shopify.com/s/files/1/0438/1310/9917/files/65409882837.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_off0000703d.bin925c1f96428837b879168f5daa808f4cba40f68b1836c944a6fd16e2c2b6ac20 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x703D | 5200 bytes |
font_01_sfnt_off000081fb.bin551419db13e301610e7d55da8726c731c95d1815c72671c8b7df85b678620f78 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x81FB | 10540 bytes |
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