MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URLs, with one specifically pointing to a suspicious domain 'jacksth.ru' that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs. The presence of embedded URLs and the link farm heuristic strongly suggest an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
Heuristics 5
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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://jacksth.ru/strik?utm_term=german+photography+book+publishers PDF link annotation
- https://cdn.sqhk.co/gejixoneku/bQihjeS/80212144416.pdfIn PDF document text
- http://itrom.fun/notedunomita0in2.pdfIn PDF document text
- http://golden-bridge.pro/4868416264a3wkd.pdfIn PDF document text
- https://cdn.sqhk.co/gixotagokezu/dQibicE/85754077788.pdfIn PDF document text
- https://cdn.sqhk.co/mibuguxinise/jfihijd/free_voice_recorder_for_iphone_6.pdfIn PDF document text
- http://blancop.xyz/courage_under_fire_movie_free7o9ju.pdfIn PDF document text
- https://cdn.sqhk.co/mujexoxa/fgegjia/lucky_skyblock_map_1._14_4.pdfIn PDF document text
- http://moscowflowers.shop/price_of_headlight_bulbscooht.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373504/normal_603252e536092.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4460043/normal_5feb709124467.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4377912/normal_5fc5a09b8a696.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4471686/normal_60003f3007df2.pdfIn PDF document text
- https://cdn.sqhk.co/nowonipewo/hiiih4Z/731286099.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fujesotes.epizy.com/new_assamese_whatsapp_video_2018.pdfIn PDF document text
- http://kiwuvapinemugi.rf.gd/boss_katana_tone_studio_manual.pdfIn PDF document text
- https://f6180879-d31b-499c-8e42-fead7842c491.filesusr.com/ugd/007227_f03f2983bde44dbab10fd338846fe3ad.pdf?index=trueIn PDF document text
- http://jegapedobip.epizy.com/referencias_bibliograficas_apa.pdfIn PDF document text
- https://s3.amazonaws.com/ronenitevodo/eanm_guidelines_bone_scintigraphy.pdfIn PDF document text
- https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_909b030e8dcc41289729ae93639b73a2.pdf?index=trueIn PDF document text
- https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_37bd795617d84198adffc88a8eea5e3b.pdf?index=trueIn PDF document text
- http://lagokatu.epizy.com/tnusrb_answer_key_2020_download_in_tamil.pdfIn PDF document text
- https://s3.amazonaws.com/voxipanovigepiv/digital_photography_complete_course_david_taylor.pdfIn PDF document text
- https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_2e9cffbf470d4b6790f518b01daa3886.pdf?index=trueIn 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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010add.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ADD | 5568 bytes |
SHA-256: d0d8849a79763fa7df24e4b597666fdf31173ab942673ec9e6e500673619aa47 |
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font_01_sfnt_off00011da6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DA6 | 11860 bytes |
SHA-256: 0ecfc3a289204864afb9714b476d894db7c71da173c942e2629aa4a0d1940703 |
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