MALICIOUS
166
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 ML classifier indicated a high probability of maliciousness. Heuristics identified suspicious links, including invisible ones pointing to domains like 'securityofusersdevicesonline.site', suggesting a phishing or malware distribution lure. The document's structure and embedded URLs indicate an attempt to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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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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Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LUREPDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
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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://bologen.ru/123?utm_term=android+bypass+ssl+certificate+pinning PDF link annotation
- https://cdn-cms.f-static.net/uploads/4458421/normal_5fe85543d2514.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379626/normal_60513fe84fcb1.pdfIn PDF document text
- https://cdn.sqhk.co/rizikodeni/ZdEjbcc/75344931307.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4371814/normal_5ff2935f9e7bc.pdfIn PDF document text
- https://cdn.sqhk.co/fomeluxilim/fijHheV/16763217095.pdfIn PDF document text
- https://cdn.sqhk.co/talexadu/td9ic1p/xitomapewofajad.pdfIn PDF document text
- http://securityofusersdevicesonline.site/15912199021medyk.pdfIn PDF document text
- http://iranomics.com/ned_s_declassified_school_survival_guide_movie989jl.pdfIn PDF document text
- http://evromotors.net/where_to_donate_gently_used_childrens_clothesx7swi.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4365649/normal_5fe60053a3e2f.pdfIn PDF document text
- https://cdn.sqhk.co/zovaratigu/MIhgxgd/doluzomikeji.pdfIn PDF document text
- http://begdas.fun/disazamazildwg1.pdfIn PDF document text
- http://topcabinets.xyz/tom_clancy_without_remorse_movie_trailerjza5x.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408992/normal_5fc7a483deef2.pdfIn PDF document text
- https://cdn.sqhk.co/bunigenozav/pEbQFhe/lowitu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/rerinago/xinukaruxazazuforesijaz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/de6703b3-23af-4059-86d1-5271a5dab603/grammar_english_checker_software.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3dae71fa-9a93-428c-89ce-a505092d6bc6/48818168019.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ecb281a4-7a82-4b55-82b3-ba0df4988b97/85864057263.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/59f69e6f-b7f2-4f72-96ae-a2716893af01/tavelimu.pdfIn PDF document text
- https://s3.amazonaws.com/wudibirewuduto/87876404019.pdfIn PDF document text
- https://s3.amazonaws.com/naxizugenabi/private_candidate_form_four_results_2017.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ead8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAD8 | 5552 bytes |
SHA-256: f278e76c187844d8594225b98f6b2f6a10f7adf1690e245a352ead3e185b25ef |
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font_01_sfnt_off0000fdd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD0 | 11448 bytes |
SHA-256: d0e8f7d9a1837f320a8017c8d3642fe357d5e8d6864f21607f14df5585d9ed5f |
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