MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The sample is a PDF file flagged by multiple heuristics and an ML classifier as malicious, specifically identified as a phishing trojan. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates the document attempts to trick the user into installing or using remote support software like AnyDesk. The presence of numerous embedded URLs, many pointing to disposable domains, suggests a link farm or distribution mechanism for malicious content. While no scripts were explicitly extracted, the malformed stream length and PDF URI findings point towards exploitation or malicious redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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/wb?keyword=what%20does%20tenth%20mean%20sentence PDF link annotation
- http://zumepelilebatu.22web.org/anydesk_free_for_mobile.pdfIn PDF document text
- http://rivuxini.66ghz.com/capability_maturity_model_journal.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382614/normal_6023f98b498f3.pdfIn PDF document text
- https://sowotelimavo.weebly.com/uploads/1/3/4/0/134000290/18698c550b47.pdfIn PDF document text
- https://dokurawufiza.weebly.com/uploads/1/3/0/7/130739275/27b35e38.pdfIn PDF document text
- https://cdn.sqhk.co/jasowipe/VPSifhh/syrian_hamster_rescue_near_me.pdfIn PDF document text
- https://cdn.sqhk.co/devisofage/NgiJjaz/cthulhu_tattoo_design.pdfIn PDF document text
- http://bakuvuwojesefa.iblogger.org/vogusazov.pdfIn PDF document text
- https://topudikuwem.weebly.com/uploads/1/3/4/0/134042537/9d5752dccb2.pdfIn PDF document text
- http://nemekarasika.iblogger.org/pericarditis_colchicine_guidelines.pdfIn PDF document text
- http://bobixuposu.22web.org/katosuxuvazuxosidejig.pdfIn PDF document text
- https://vakogupomuniv.weebly.com/uploads/1/3/4/6/134610568/bunusexobudibidet.pdfIn PDF document text
- https://cdn.sqhk.co/zasemewiti/Dggjhgd/fupopeledotilir.pdfIn PDF document text
- https://cdn.sqhk.co/kasuwajavi/mij73jf/black_dog_wallpaper_hd_free_download.pdfIn PDF document text
- http://mibosaputir.22web.org/cu_hn_sheet.pdfIn PDF document text
- https://ramemegu.weebly.com/uploads/1/3/1/3/131383760/xejorurufa-potaruwe.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://mowumurukilada.rf.gd/checklist_template_project_management.pdfIn PDF document text
- http://gajubadizoduj.epizy.com/cell_is_like_a_school_worksheet.pdfIn PDF document text
- http://xamilelamijokuk.rf.gd/angel_full_hd_video_songs.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_off000127e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127E0 | 5064 bytes |
SHA-256: ee3c341695f902c15bf0e647c522a784ef4ecc5156f0a874c824ef9b4c1f92c3 |
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font_01_sfnt_off00013904.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13904 | 11460 bytes |
SHA-256: ca640644aa8d69f8f511269e85e61eeef526ed5c081b7283e44875b6a983cc59 |
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