MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. It contains a large number of external links, including one to 'trafficel.ru', suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, appears to be related to academic search terms, which is a common lure for phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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External URI info PDF_URIPDF contains an external URL action
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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://trafficel.ru/123?utm_term=epidemiology+in+medicine+charles+h+hennekens+pdf
- https://kipunokazapalu.weebly.com/uploads/1/3/4/7/134774983/5575623.pdf
- https://cdn-cms.f-static.net/uploads/4388424/normal_5fb475add74f5.pdf
- https://lezaxuvetevomuf.weebly.com/uploads/1/3/4/3/134370754/sonokesowizoluwedi.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/pesetufavo/ninasotosixetijagudo.pdf
- https://uploads.strikinglycdn.com/files/a1d49e27-07dc-4a63-97af-683e421b531c/43789979949.pdf
- https://s3.amazonaws.com/ligole/ppt_on_oxygen_reduction_reaction.pdf
- https://uploads.strikinglycdn.com/files/56f18a16-e298-494d-8440-8c3670171f9d/lenovo_yoga_8_tablet_review.pdf
- https://uploads.strikinglycdn.com/files/b69718e3-cfe2-4622-b8ea-561cb38d973d/epson_2175_manual.pdf
- https://uploads.strikinglycdn.com/files/c75b4dbb-5818-41cc-be81-37a83d9d6bde/79291971731.pdf
- https://uploads.strikinglycdn.com/files/c07594b5-5ff9-413f-ad5f-d3a48ab5e81d/destiny_2_hand_cannon.pdf
- https://uploads.strikinglycdn.com/files/35fd1e82-1140-40c8-af46-b6e14beeaec3/napimumowo.pdf
- https://uploads.strikinglycdn.com/files/edfd3cc4-23cd-4506-ba0d-2301a4120c77/comptia_security_study_guide_exam_sy0-501_ebook.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b072.bin74ee3b71b8377a706e0b248378d0dc076754a3e86775ca22df50d4ac8b9f48f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB072 | 5692 bytes |
font_01_sfnt_off0000c3b4.bin81bf04210b481e15a2680aa862f63c1dd99468bdc56ca1096fba02fb9494fe85 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC3B4 | 9576 bytes |
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