MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a prominent link that redirects to a malicious URL, disguised as a book download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior, and the ML classifier strongly indicates maliciousness. The document body, though partially corrupted, contains the text 'Ansi c book pdf download' and the malicious URL, reinforcing the lure.
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/pify?keyword=ansi+c+book+pdf+download
- http://files.jellenphotographyonline.com/uploads/1/3/1/1/131164418/0a94c8412ae.pdf
- http://files.sfihs-sfusd.com/uploads/1/3/2/6/132695434/wezir.pdf
- http://files.spinalunwinding.com/uploads/1/3/1/3/131398097/3746671.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
- https://cdn.shopify.com/s/files/1/0435/9297/4499/files/miguel_de_cervantes_biografia.pdf
- https://cdn.shopify.com/s/files/1/0428/7869/7631/files/ray_s_arithmetic_series.pdf
- https://cdn.shopify.com/s/files/1/0432/6942/3269/files/zetoruzenude.pdf
- https://cdn.shopify.com/s/files/1/0430/4027/6642/files/42490972615.pdf
- https://cdn.shopify.com/s/files/1/0434/9083/6632/files/74909552138.pdf
- https://cdn.shopify.com/s/files/1/0434/6295/1074/files/wuwuwisuge.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58085676994.pdf
- https://cdn.shopify.com/s/files/1/0433/1238/2117/files/mexalido.pdf
- https://cdn.shopify.com/s/files/1/0431/3061/8011/files/tebojopox.pdf
- https://cdn.shopify.com/s/files/1/0436/9140/9562/files/46449053526.pdf
- https://cdn.shopify.com/s/files/1/0432/6352/5026/files/tezidipuj.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_off0000480e.bin9ba61b74431597378e245ad9edd67831eb78e97c06271226ef75747a98ebb0e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x480E | 5340 bytes |
font_01_sfnt_off00005a4e.bin05b823360637faea257589d3d04f90fe3f4500b216d6563c52ed98a05ddb8779 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A4E | 10068 bytes |
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