MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body and heuristics indicate a lure for a 'study guide' which is part of an SEO link farm strategy. The ML classifier strongly supports the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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=praxis+ii+general+science+study+guide+pdf In PDF document text
- http://files.abideministryofarlington.org/uploads/1/3/1/4/131483423/mufibavuz.pdfIn PDF document text
- http://files.kumisillustrations.co.uk/uploads/1/3/2/8/132815367/lebamavuwi.pdfIn PDF document text
- http://files.soundslikecrowes.com/uploads/1/3/1/8/131871518/2f6e86aea3ae0.pdfIn PDF document text
- http://files.womensquartermarathon.com/uploads/1/3/1/3/131379894/5485506.pdfIn PDF document text
- http://files.rebeccawalzteachingportfolio.com/uploads/1/3/0/7/130739131/koverejutu-kizebu-rimejapebutuku.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0438/2133/4688/files/duponeduwo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3117/4039/files/lujovijobaworowifiwuja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9295/9642/files/54368848510.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7877/0076/files/mudegesofev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6649/1041/files/59895345696.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rimudunibodosugesujusuvud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4066/9849/files/suzewi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5247/4267/files/29371318788.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1478/2119/files/13332719561.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7945/1289/files/44957676088.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5470/2496/files/nudugabojijavatepupax.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8245/7000/files/litajokeguxomimis.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006d0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D0B | 5264 bytes |
SHA-256: 749bb984a256ae10e3a69d63d9985793c8c7f3403b5f138dae0cfcf380323e25 |
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font_01_sfnt_off00007f07.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F07 | 10700 bytes |
SHA-256: cbae75955ff476037dbbec00f5c0af0d9c2548dd28fd8e6a04f1c0d5533c7eb6 |
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font_02_sfnt_off0000a3bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA3BB | 16036 bytes |
SHA-256: 149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1 |
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font_03_sfnt_off0000b823.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB823 | 4324 bytes |
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
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