MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains text related to 'brain teasers book pdf', suggesting a lure to entice users to click on the malicious links. 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=brain+teasers+book+pdf
- http://files.radicalrootsherbs.com/uploads/1/3/2/6/132695280/47f6e.pdf
- http://files.studioplumpiano.com/uploads/1/3/1/3/131383497/70178f76b.pdf
- http://files.yasmeenalawadi.com/uploads/1/3/2/6/132682233/nakomaselip-pupomaw.pdf
- https://cdn.shopify.com/s/files/1/0434/2513/6792/files/dekisodutekezep.pdf
- https://cdn.shopify.com/s/files/1/0430/9535/9642/files/90973787090.pdf
- https://cdn.shopify.com/s/files/1/0431/9779/2420/files/fuzowezupef.pdf
- https://cdn.shopify.com/s/files/1/0438/8120/1819/files/20700702140.pdf
- https://cdn.shopify.com/s/files/1/0429/3260/0985/files/zovutuzere.pdf
- https://cdn.shopify.com/s/files/1/0432/5844/5979/files/kewekikejolaremejorefebox.pdf
- https://cdn.shopify.com/s/files/1/0432/0781/9422/files/72127252605.pdf
- https://cdn.shopify.com/s/files/1/0432/2449/8333/files/6132529685.pdf
- https://cdn.shopify.com/s/files/1/0428/3239/6447/files/nilopagunamosebo.pdf
- https://cdn.shopify.com/s/files/1/0437/2371/8805/files/palovadiruzepekalofuv.pdf
- https://cdn.shopify.com/s/files/1/0427/3097/9495/files/71952759081.pdf
- https://cdn.shopify.com/s/files/1/0428/6794/9724/files/62736193683.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_off0000716f.binaa34b42fc993da11a16bb9678c9597724b78bde879d7556a6b40cb126f954eaa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x716F | 5044 bytes |
font_01_sfnt_off00008297.bin66ee51751f9ca33a951fd109e65c5da578956aca4cff1f15e995932c25fba3e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8297 | 10484 bytes |
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