MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF document exhibits characteristics of a link farm, embedding numerous external links. A critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=kopista+bartleby+pdf', suggesting an attempt to obscure the final malicious destination. The document body contains obfuscated text and multiple URLs, further supporting the attack pattern of a malicious redirector. No scripts were extracted, limiting the analysis of direct payload execution.
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.com/pify?keyword=kopista+bartleby+pdf
- http://xulupug.xn--cafer-dsa.dk/uploads/1/3/1/1/131164250/01fd329f307.pdf
- http://veruwajit.trinahoadleyphotography.com/uploads/1/3/0/7/130739775/gumojemewa_nobemedemim.pdf
- https://cdn.shopify.com/s/files/1/0434/6078/8390/files/zisaxiwefubogatikepog.pdf
- https://cdn.shopify.com/s/files/1/0437/6192/6293/files/37883696180.pdf
- https://cdn.shopify.com/s/files/1/0431/5476/8021/files/34783059557.pdf
- https://cdn.shopify.com/s/files/1/0436/2646/3385/files/55871286760.pdf
- https://cdn.shopify.com/s/files/1/0451/2504/2329/files/oh_baby_girl_song_starmusiq.pdf
- https://cdn.shopify.com/s/files/1/0437/0300/9434/files/dion_waiters_injury_report.pdf
- https://cdn.shopify.com/s/files/1/0429/7293/8399/files/tuvogakolujo.pdf
- https://cdn.shopify.com/s/files/1/0427/9749/8535/files/selling_price_formula.pdf
- https://cdn.shopify.com/s/files/1/0435/9625/1304/files/86360683905.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_off00009bf3.binbc0d42126206266a273cdd46d84af8e38f66740ee26fd578ebc5d55088fe17e9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9BF3 | 5244 bytes |
font_01_sfnt_off0000add9.binb1dc75736afc3dd693570f5995963ec5e56a809d80fdb7f07a07ea75acff8a88 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xADD9 | 10556 bytes |
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