MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for an academic book. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm designed to attract traffic. 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.ru/pify?keyword=cambridge+english+empower+a1+starter+student+s+book+pdf
- http://files.bdac.ca/uploads/1/3/0/7/130740522/pekugebe.pdf
- http://files.decatn.org/uploads/1/3/1/0/131070483/4567643.pdf
- http://files.laspiritualarts.com/uploads/1/3/2/3/132303264/426802.pdf
- http://files.dennismichaelfoley.com/uploads/1/3/1/6/131637043/d79b8.pdf
- https://cdn.shopify.com/s/files/1/0431/3595/9202/files/39253166396.pdf
- https://cdn.shopify.com/s/files/1/0438/8257/8088/files/banana_bread_recipes.pdf
- https://cdn.shopify.com/s/files/1/0433/8378/3575/files/freedom_of_religion_apostasy_and_islam.pdf
- https://cdn.shopify.com/s/files/1/0434/6917/6985/files/capitec_bursary_application_form_2020.pdf
- https://cdn.shopify.com/s/files/1/0436/8865/7049/files/zusovesedironale.pdf
- https://cdn.shopify.com/s/files/1/0435/6436/8021/files/wamekakabobekixefefesikew.pdf
- https://cdn.shopify.com/s/files/1/0432/0008/6180/files/gomujuvokafaxadototixa.pdf
- https://cdn.shopify.com/s/files/1/0432/2374/4674/files/majurifowevukelipe.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xidegafizupewutuzu.pdf
- https://cdn.shopify.com/s/files/1/0431/5050/8194/files/punjab_textbook_physics_9th_class.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000447b.bin886fd848e81c23b7529b497934503ab9675df22ca7ad17478e37c6bc5636ced1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x447B | 5708 bytes |
font_01_sfnt_off000057ce.binbe121563639885a233bac5a6fc8f14f98cf1f68453b2cdf6c3f4523aa988fcfb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x57CE | 9532 bytes |
font_02_sfnt_off00007859.bin1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7859 | 4324 bytes |
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