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, disguised as a chemistry syllabus. It also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness, supporting the redirector link as the primary attack vector.
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=chemistry+syllabus+pdf
- http://files.slsfnc.com/uploads/1/3/1/3/131379774/xevofuveji.pdf
- http://files.ninjoga.net/uploads/1/3/0/7/130776111/kamapalub-kiwile-sizowuja-rotilupojes.pdf
- http://files.body-knowledge.com/uploads/1/3/2/6/132681824/2094315.pdf
- https://cdn.shopify.com/s/files/1/0430/8749/5322/files/koxogogilevamogero.pdf
- https://cdn.shopify.com/s/files/1/0432/7827/0619/files/zulukejoguxunepakoj.pdf
- https://cdn.shopify.com/s/files/1/0432/4930/3720/files/jibufuwiw.pdf
- https://cdn.shopify.com/s/files/1/0431/7210/2308/files/lukosuguwediwimafemiga.pdf
- https://cdn.shopify.com/s/files/1/0432/3350/9534/files/chesapeake_public_schools_calendar.pdf
- https://cdn.shopify.com/s/files/1/0433/3699/0885/files/levaxanurupuxetojike.pdf
- https://cdn.shopify.com/s/files/1/0430/5269/5703/files/kigomitogo.pdf
- https://cdn.shopify.com/s/files/1/0432/7030/7995/files/geluwaxavefefepefigabof.pdf
- https://cdn.shopify.com/s/files/1/0432/4546/9858/files/46965592545.pdf
- https://cdn.shopify.com/s/files/1/0429/7824/6815/files/83576950533.pdf
- https://cdn.shopify.com/s/files/1/0432/1614/2491/files/wordly_wise_book_8_lesson_6_answers.pdf
- https://cdn.shopify.com/s/files/1/0429/9892/3427/files/bujogezidanom.pdf
- https://cdn.shopify.com/s/files/1/0440/5189/0341/files/32809529509.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_off00007065.bin78353e230d88fe3072fbc2d028ffdcf55c2dfefc66f84050348e1f15ecf0a88e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7065 | 5428 bytes |
font_01_sfnt_off000082a4.bine58a1c57fd93bd6740b45e3a87bdbafceae55917dcfe6870637f02664fd4bb70 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x82A4 | 9832 bytes |
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