MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. One prominent URL, https://ttraff.ru/pify?keyword=english+grammar+exercises+book+with+answers+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same URL and other PDF files, suggesting a lure to external malicious content. The ML classifier 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.ru/pify?keyword=english+grammar+exercises+book+with+answers+pdf
- http://files.qualitycraftedstoragesheds.com/uploads/1/3/1/4/131438708/jepulekugu.pdf
- http://muvux.zenergymassage.net/uploads/1/3/2/6/132681946/befox_tawisap_pamazig_labivuwusu.pdf
- https://cdn.shopify.com/s/files/1/0428/8295/7478/files/shangri_la_anime.pdf
- https://cdn.shopify.com/s/files/1/0434/9100/0472/files/xevor.pdf
- https://cdn.shopify.com/s/files/1/0433/2004/9822/files/non_essential_amino_acids.pdf
- https://cdn.shopify.com/s/files/1/0433/4256/1433/files/54333155374.pdf
- https://cdn.shopify.com/s/files/1/0433/7870/4536/files/netflix_dvd_queue.pdf
- https://cdn.shopify.com/s/files/1/0429/2067/3433/files/pijiropefekabuvufila.pdf
- https://cdn.shopify.com/s/files/1/0447/8540/2013/files/begekupemumodulabuk.pdf
- https://cdn.shopify.com/s/files/1/0431/9641/6157/files/fallout_vr_mods.pdf
- https://cdn.shopify.com/s/files/1/0434/5482/4598/files/46777183929.pdf
- https://cdn.shopify.com/s/files/1/0436/8121/8710/files/52005067631.pdf
- https://cdn.shopify.com/s/files/1/0431/4769/0145/files/pazazibigo.pdf
- https://cdn.shopify.com/s/files/1/0437/9977/3341/files/brother_printer_drivers_dcp-_t510w.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_off00004698.bin4612eb0d9731f564b858168e2b323c75fbfba449453c4f012b53dbd29fcd409c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4698 | 5888 bytes |
font_01_sfnt_off00005a80.bin068eaef09ca40c5354ec09e4e16422b855b9241fda5f897279c8fd503121f03c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A80 | 9684 bytes |
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