MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded URLs, many of which point to a link farm hosted on cdn.shopify.com. One of these URLs, https://ttraff.ru/wb?keyword=nicotinamida%20literatura%20pdf, is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to the malicious URL.
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/wb?keyword=nicotinamida%20literatura%20pdf
- http://worija.nolababybump.com/uploads/1/3/2/7/132740214/vavamarufalow-mefedibewarunup-nededajobojoze.pdf
- http://files.smacarts.org/uploads/1/3/1/4/131438808/xakopu-dozap-vakinowagega.pdf
- http://wafunovu.benkari.net/uploads/1/3/1/8/131856772/04e17baf373b.pdf
- https://cdn.shopify.com/s/files/1/0434/4345/4102/files/computer_programming_books_in_urdu.pdf
- https://cdn.shopify.com/s/files/1/0434/5180/9957/files/98466788983.pdf
- https://cdn.shopify.com/s/files/1/0430/3850/7169/files/14434092076.pdf
- https://cdn.shopify.com/s/files/1/0428/9812/9059/files/jidinivijego.pdf
- https://cdn.shopify.com/s/files/1/0435/1442/9608/files/90426631580.pdf
- https://cdn.shopify.com/s/files/1/0429/5183/5801/files/cbse_class_11_chemistry_textbook_part_1.pdf
- https://cdn.shopify.com/s/files/1/0435/5158/8507/files/mefekejedupufinen.pdf
- https://cdn.shopify.com/s/files/1/0448/0165/4935/files/the_new_becoming_vegetarian.pdf
- https://cdn.shopify.com/s/files/1/0428/1381/6995/files/hernia_hiatal_por_deslizamento.pdf
- https://cdn.shopify.com/s/files/1/0434/4869/6993/files/butterfly_burning_summary.pdf
- https://cdn.shopify.com/s/files/1/0438/6488/3355/files/cinderella_2020_movie_script.pdf
- https://cdn.shopify.com/s/files/1/0429/7578/9215/files/monkey_madness_2_guide.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_off0000646a.bin858190408061fa28f0cae63c2de89c744acd6f64d1ee3c3f9c1ef451a48e3359 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x646A | 5092 bytes |
font_01_sfnt_off00007598.bin365573c980e43a6e8c7ff2443c8ecf1c860aadb33100e63f7b11d6120cd997cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7598 | 12188 bytes |
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