MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The document body, though obfuscated, contains text related to 'C programming book pdf free download' and the authoring application 'wkhtmltopdf', suggesting a lure. The presence of multiple external links, many pointing to Shopify domains, further supports the link farm heuristic. The ML classifier also strongly flagged this PDF as malicious.
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.cc/pify?keyword=c+programming+book+pdf+free+download
- http://files.wchqfm.com/uploads/1/3/1/4/131452950/duxoso.pdf
- http://kofefevet.thecenterpittsburg.org/uploads/1/3/1/6/131637814/mexaziwixon-samofuwet-texukuvogewox-zapekavoni.pdf
- http://files.akbeadsociety.org/uploads/1/3/2/6/132696104/kafiginujapokawez.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/4016/2470/files/xawosafowevezuzugebezix.pdf
- https://cdn.shopify.com/s/files/1/0428/2885/7503/files/pdf417_barcode_encoder.pdf
- https://cdn.shopify.com/s/files/1/0435/5486/5320/files/77187570934.pdf
- https://cdn.shopify.com/s/files/1/0433/3443/4969/files/any_autocad_drawing_to_converter_online_free.pdf
- https://cdn.shopify.com/s/files/1/0428/5048/4390/files/94022806401.pdf
- https://cdn.shopify.com/s/files/1/0440/8626/3960/files/nenaz.pdf
- https://cdn.shopify.com/s/files/1/0432/5598/8387/files/girugobafo.pdf
- https://cdn.shopify.com/s/files/1/0439/5529/0270/files/nuxumibev.pdf
- https://cdn.shopify.com/s/files/1/0440/1473/1429/files/70429811232.pdf
- https://cdn.shopify.com/s/files/1/0428/0070/9791/files/attendance_certificate_format_for_school_students.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000654e.bin658b571e1b5e6c355dab82a51210ac93562a43dbb18dc203c77522a1f4a864cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x654E | 5384 bytes |
font_01_sfnt_off00007798.bin5fd7231a3aad0ba938d4b536651372192de7496baaf455614932b4430ff6da24 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7798 | 10072 bytes |
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