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 links, many of which point to external websites. One of these links, 'https://ttraff.ru/pify?keyword=boolean+algebra+laws+proof+pdf', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and appears to be a lure, possibly related to academic content, to encourage users to click on the malicious links.
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=boolean+algebra+laws+proof+pdf
- http://files.jenningssheffield.com/uploads/1/3/1/4/131413766/jupixezof-bafusurim-vuxuvew.pdf
- http://files.bearcattheatre.org/uploads/1/3/0/7/130739116/5fe99868e.pdf
- http://bogewop.treehuggersoap.com/uploads/1/3/2/3/132303382/bdb0bc891a2.pdf
- http://files.doubleadobeschool.org/uploads/1/3/0/7/130739918/1347475.pdf
- http://files.digivationsxgens.org/uploads/1/3/1/0/131070604/jubopepukuzodeduzo.pdf
- https://cdn.shopify.com/s/files/1/0433/9027/1642/files/95108936521.pdf
- https://cdn.shopify.com/s/files/1/0431/0476/4068/files/75781588978.pdf
- https://cdn.shopify.com/s/files/1/0433/8896/0933/files/mogulixatevezixuxotopiv.pdf
- https://cdn.shopify.com/s/files/1/0431/9445/0078/files/16089449687.pdf
- https://cdn.shopify.com/s/files/1/0430/2484/2906/files/30916187472.pdf
- https://cdn.shopify.com/s/files/1/0430/5318/7223/files/munchkin_tabletop_simulator.pdf
- https://cdn.shopify.com/s/files/1/0434/1284/8790/files/pirabogazomuzokatelukojan.pdf
- https://cdn.shopify.com/s/files/1/0431/3477/9553/files/arduino_uno_45_projects_for_beginners_and_experts.pdf
- https://cdn.shopify.com/s/files/1/0441/1251/1128/files/ruvabuxirakixakibaxire.pdf
- https://cdn.shopify.com/s/files/1/0437/7804/8162/files/zanebopovuxakeketati.pdf
- https://cdn.shopify.com/s/files/1/0437/1195/5098/files/vizepujidarawotutedagatib.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_off0000710b.bindee5d0c1a9351d2e1129a73891b3657495010e0e3afbf79f609757f6490388d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x710B | 5492 bytes |
font_01_sfnt_off000083cf.bin09880235fa942e06a9edb19517bd2a77aaf5363217cfbf413966ef181339d36b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x83CF | 9640 bytes |
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