MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains embedded links, one of which points to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Penguin books logo pdf'. The presence of numerous links to external PDFs, many hosted on static.usrfiles.com, suggests a link farm or SEO poisoning tactic to distribute the malicious content. The ML classifier strongly supports the malicious verdict.
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.com/wix?keyword=penguin+books+logo+pdf
- https://static.usrfiles.com/ugd/b8c837_ecf87b87e9d6415997fea48b7193cf8d.pdf
- https://static.usrfiles.com/ugd/f515ca_3caa69cd33f049ae88182e2ccd9d5dc5.pdf
- https://static.usrfiles.com/ugd/8a419d_6bd1c90c40524cb48fff4ee52237d351.pdf
- https://static.usrfiles.com/ugd/ce5d00_1d0a5cebfb1043d1ae4fe934ae4ad7d5.pdf
- https://cdn.shopify.com/s/files/1/0429/7015/3113/files/88804406928.pdf
- https://cdn.shopify.com/s/files/1/0429/2860/3295/files/lujezakawewaw.pdf
- https://cdn.shopify.com/s/files/1/0431/6341/8784/files/vosuseloxedoke.pdf
- https://static.usrfiles.com/ugd/89064d_0445077ad79b4d6a9fcba4e3c02b3ddd.pdf
- https://static.usrfiles.com/ugd/704566_9b6ce8a9a8774ac2844a9bd18efa2b6b.pdf
- https://static.usrfiles.com/ugd/b5aed9_b0fd83c97c6f4f39af51b0b3d549972a.pdf
- https://static.usrfiles.com/ugd/b8c837_5def78df6d9a4c24803373e69d6f63c3.pdf
- https://cdn.shopify.com/s/files/1/0434/5525/0598/files/85283179545.pdf
- https://cdn.shopify.com/s/files/1/0434/5351/3893/files/anatomy_of_heart_valves.pdf
- https://cdn.shopify.com/s/files/1/0434/7707/4077/files/el_patriotismo_mijail_bakunin.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_off00010112.binfc8c25faa3d181312c8fba98684ace9c616f2a898f8dd71375b471800da10eba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10112 | 5108 bytes |
font_01_sfnt_off00011291.binf07b2e4968bccbf6ecd0a2096a09ae39a6236ad92ab1038d24f43a51eb371cef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11291 | 10684 bytes |
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