MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same URL. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF. The ML classifier strongly indicates maliciousness.
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=literature+quiz+questions+and+answers+2019
- http://files.manaserigallery.com/uploads/1/3/0/8/130814680/afc7d46bcb.pdf
- http://files.armadapalcamp.org/uploads/1/3/1/6/131606393/revedezodilupik.pdf
- http://barode.leewardelite.com/uploads/1/3/1/3/131398097/fe9a4.pdf
- http://fovusufow.emilyweihing.com/uploads/1/3/0/7/130776031/faxodutegok.pdf
- https://cdn.shopify.com/s/files/1/0427/5778/3718/files/37901298943.pdf
- https://cdn.shopify.com/s/files/1/0433/2155/7150/files/belosufopolivegowefeselo.pdf
- https://cdn.shopify.com/s/files/1/0437/5986/1909/files/que_es_densidad_en_quimica.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdf
- https://cdn.shopify.com/s/files/1/0434/7245/3797/files/20176203316.pdf
- https://cdn.shopify.com/s/files/1/0430/5672/6170/files/96114555428.pdf
- https://cdn.shopify.com/s/files/1/0431/5722/5638/files/snap_on_welder.pdf
- https://cdn.shopify.com/s/files/1/0434/5770/8193/files/a_wrinkle_in_time_movie_activities.pdf
- https://cdn.shopify.com/s/files/1/0429/9289/4115/files/93942637257.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_off00009995.bin696ef78137273826133dce108c7172b242ece57854b8bc65d757e7c30ac61a90 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9995 | 5476 bytes |
font_01_sfnt_off0000ac5c.binb5e8fde051869735dbad4b5be3f3c18de8c4e9dbd28592b758ba2870231346ef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC5C | 10076 bytes |
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