MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wb?keyword=lector%20de%20pdf%20para%20windows%20xp', is designed to lure users by pretending to offer a PDF reader for Windows XP. The document also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or distributing malicious content. 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/wb?keyword=lector%20de%20pdf%20para%20windows%20xp
- http://files.ovmsso.org/uploads/1/3/2/6/132680860/lusuwodubetebofa.pdf
- http://files.flancmanfrisch.com/uploads/1/3/1/8/131871414/widapabidazuz-vulomal-pepap.pdf
- http://files.eastsidefamilytherapy.net/uploads/1/3/2/6/132681464/dazoraxu.pdf
- https://cdn.shopify.com/s/files/1/0437/8161/9861/files/43442178230.pdf
- https://cdn.shopify.com/s/files/1/0431/7177/4615/files/62063991475.pdf
- https://cdn.shopify.com/s/files/1/0433/9446/5948/files/51040029782.pdf
- https://cdn.shopify.com/s/files/1/0433/9718/5701/files/3_month_lsat_study_schedule.pdf
- https://cdn.shopify.com/s/files/1/0439/4539/4331/files/historia_de_la_contabilidad_libros.pdf
- https://cdn.shopify.com/s/files/1/0438/5370/9472/files/astragalus_literatura.pdf
- https://cdn.shopify.com/s/files/1/0434/1687/9271/files/51896059988.pdf
- https://cdn.shopify.com/s/files/1/0435/6587/5359/files/surgical_pathology_report.pdf
- https://cdn.shopify.com/s/files/1/0430/6462/3265/files/bigujusowix.pdf
- https://cdn.shopify.com/s/files/1/0430/7006/2754/files/28312292533.pdf
- https://cdn.shopify.com/s/files/1/0434/5593/8725/files/cervical_lymphadenitis.pdf
- https://cdn.shopify.com/s/files/1/0431/9494/1603/files/2789306758.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_off00004947.binffd9bb963dbf18af6f897df4284792977f070267f850433b2950c42abc6d61f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4947 | 5216 bytes |
font_01_sfnt_off00005b2c.bin0ba52cb46974f2ac688cd6be2d7640e241a322bc8dca44eb4887e5c60aa0cdb4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B2C | 10392 bytes |
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