MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a significant number of external links, with one heuristic specifically identifying a 'mass external PDF link farm'. The primary malicious URL identified is 'https://traffine.ru/strik?utm_term=combinatorics+worksheet+pdf', which is likely used for phishing or to host further malicious content. ClamAV and an ML classifier also flagged this PDF as malicious, indicating a high likelihood of malicious intent.
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://traffine.ru/strik?utm_term=combinatorics+worksheet+pdf
- https://cdn-cms.f-static.net/uploads/4465269/normal_5fad5afdd2f3f.pdf
- https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/8a8b9ae25ba2.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/61afc700-560e-41cf-9a12-4051871c5ab5/la_guerre_de_troie_n_aura_pas_lieu_rsum.pdf
- https://s3.amazonaws.com/domegagowevag/wetaduwub.pdf
- https://uploads.strikinglycdn.com/files/0c005e49-5b4c-42cd-a49f-13909dfa8162/70680725275.pdf
- https://uploads.strikinglycdn.com/files/09ab340c-c1c4-45b1-92f6-a2ba8a8e446e/cuantos_ejes_de_simetria_tiene_un_octgono.pdf
- https://uploads.strikinglycdn.com/files/36fd0d51-8c6e-47b2-b637-deaa85387c0a/36575634634.pdf
- https://s3.amazonaws.com/juvuraguvutoxif/read_allegiant_online.pdf
- https://s3.amazonaws.com/mexesazaxasa/ayatan_sculpture_mission_guide.pdf
- https://uploads.strikinglycdn.com/files/85c4bea0-952f-4b51-8df2-a11565c8fb8e/oru_murai_piranthen_oru_murai_piranthen_song_download.pdf
- https://s3.amazonaws.com/vixuwogetiv/11770221895.pdf
- https://s3.amazonaws.com/tesotiwapax/51305293131.pdf
- https://s3.amazonaws.com/wukara/opioid_crisis_va.pdf
- https://uploads.strikinglycdn.com/files/bf5adb54-f181-474a-8b0a-e004b1551780/93367816723.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_off0000aad8.bin1f6048c797e40af3046278259bc378a3764c9bb37dfc9ee39cb13a317cebb958 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAAD8 | 5564 bytes |
font_01_sfnt_off0000bda4.bince5965f0a7f2c4620c59a8c60ce4b8457e4bbee4e6d832fec5c95ecb7a5a295a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDA4 | 9400 bytes |
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