MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, contains the same URL and other links that appear to be part of a link farm designed to improve search engine rankings for specific keywords, likely as a lure. The ML classifier strongly indicated 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=organic+chemistry+mcmurry+9th+edition+pdf
- http://files.gerigventer.com/uploads/1/3/2/6/132695467/lukifusatodixe_wamete_poseboxapovi_beregoniba.pdf
- http://files.houghtonwhite.co.uk/uploads/1/3/1/8/131871488/34fc1e50a.pdf
- http://wixexe.trupbsc.ca/uploads/1/3/1/0/131069869/4468639.pdf
- http://waniza.fifilashes.com/uploads/1/3/1/8/131858419/demolu-zexasogaw.pdf
- http://files.namiwashcounty.org/uploads/1/3/0/7/130739971/ragenufa.pdf
- https://cdn.shopify.com/s/files/1/0435/0607/3759/files/94378534874.pdf
- https://cdn.shopify.com/s/files/1/0430/6498/3701/files/biodata_template_philippines.pdf
- https://cdn.shopify.com/s/files/1/0435/8940/2779/files/58503514915.pdf
- https://cdn.shopify.com/s/files/1/0433/7801/6421/files/ram_owners_manual.pdf
- https://cdn.shopify.com/s/files/1/0435/6076/3555/files/48219388942.pdf
- https://cdn.shopify.com/s/files/1/0429/8565/2375/files/rikerifibelebe.pdf
- https://cdn.shopify.com/s/files/1/0433/4066/0904/files/google_chrome_for_laptop_free.pdf
- https://cdn.shopify.com/s/files/1/0437/3073/1173/files/promised_land_book.pdf
- https://cdn.shopify.com/s/files/1/0431/1370/9725/files/22900094475.pdf
- https://cdn.shopify.com/s/files/1/0429/8198/2361/files/93484479850.pdf
- https://cdn.shopify.com/s/files/1/0429/3620/5479/files/wufinopexudulu.pdf
- https://cdn.shopify.com/s/files/1/0462/5720/9495/files/rome_audio_guides_free.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_off00004f65.bine797c206bb82e33d6a012f5b12a7e90f656efc2279cab063bb12f7f33f42c0e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4F65 | 5824 bytes |
font_01_sfnt_off0000630d.bin7fcb8736517092e16bbdb17371c5753413c972be13fbce79021d03598e375246 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x630D | 14440 bytes |
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