MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains numerous external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm. The document body, though heavily obfuscated, suggests a lure related to 'Vipkid mock quiz answers', aligning with phishing or social engineering tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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://midufefew.ru/wix?keyword=vipkid+mock+quiz+answers
- https://static.s123-cdn-static.com/uploads/4383798/normal_5fc66c84dfe80.pdf
- https://cdn-cms.f-static.net/uploads/4455639/normal_603168ae43e4d.pdf
- https://static.s123-cdn-static.com/uploads/4471690/normal_5fc8c4d5cf916.pdf
- https://cdn-cms.f-static.net/uploads/4483097/normal_60232d3ba8ac0.pdf
- https://cdn-cms.f-static.net/uploads/4417653/normal_5fd3c9a7da626.pdf
- https://cdn.sqhk.co/jirudumom/bIkohbh/27382230233.pdf
- https://cdn-cms.f-static.net/uploads/4402707/normal_601e60832a9dc.pdf
- https://mogivara.weebly.com/uploads/1/3/2/7/132712472/vadogixow_tufexaradipov_fuzorigifanimej.pdf
- https://cdn.sqhk.co/vizinifum/hcKjizZ/tapujepowefomekitezizox.pdf
- https://cdn.sqhk.co/wolitobutak/sgepXgj/color_by_numbers_christmas_pictures.pdf
- https://vuxabodunufa.weebly.com/uploads/1/3/1/4/131407539/giperekukaj-fukuvavoxo-pigifewukol.pdf
- https://cdn-cms.f-static.net/uploads/4381541/normal_6009db849aaf2.pdf
- https://jalusuduzewot.weebly.com/uploads/1/3/1/4/131456012/d3808fd4ad38.pdf
- https://fezagigix.weebly.com/uploads/1/3/0/8/130813643/fdf370e4007a82.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://uploads.strikinglycdn.com/files/51030d3c-e5c8-42b3-9c1d-a5ea811ccb8e/torojogojewevezenugow.pdf
- https://uploads.strikinglycdn.com/files/7acbc8e9-61b7-4b70-8067-6a4fe506a523/sword_art_online_series_order_to_watch.pdf
- https://uploads.strikinglycdn.com/files/ebecae98-a97c-4c91-a5ed-c9946b091e88/41694247004.pdf
- https://uploads.strikinglycdn.com/files/1b68894c-f2b1-4428-8298-79d0621d7d7f/50119664186.pdf
- https://uploads.strikinglycdn.com/files/8fca9862-70ca-479d-aa44-ef18066ac53d/the_expanse_season_5.pdf
- https://uploads.strikinglycdn.com/files/f08bb976-1fcb-462b-904d-2128272fba07/all_physics_formulas.pdf
- https://uploads.strikinglycdn.com/files/a5b3cb39-cb67-4908-9d9a-ef231e66011f/how_to_use_turtle_beach_recon_70_on_pc.pdf
- https://uploads.strikinglycdn.com/files/588c8d9b-5b4d-4a1b-a4b3-d30959c95ff4/wordly_wise_3000_book_8_lesson_5_word_list.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f8c9.bin7a947ea86dfc66e3a3ea47c7ef69cb125879519a6013cddf4436b7f70d019430 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8C9 | 5284 bytes |
font_01_sfnt_off00010abc.bin072bb696c394a30ee976009872a24049d37070021c68291c82a4677ca9f60ee9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ABC | 11364 bytes |
font_02_sfnt_off0001313f.bin0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1313F | 4324 bytes |
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