MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains a large number of embedded links, many of which point to other PDF files hosted on disposable domains. The primary malicious link, 'https://synerhu.ru/pbw?utm_term=samsung+usb+driver+for+mobile+phones.zip', is designed to lure users into downloading a ZIP archive, likely containing a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LUREPDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
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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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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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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://synerhu.ru/pbw?utm_term=samsung+usb+driver+for+mobile+phones.zip In PDF document text
- https://cdn-cms.f-static.net/uploads/4371553/normal_5fd64cdb8bd4d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449771/normal_6039a13f42cd7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422893/normal_606577de7fa59.pdfIn PDF document text
- https://xebutikud.weebly.com/uploads/1/3/0/8/130813588/7320885.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454672/normal_602b605047f6d.pdfIn PDF document text
- https://tuvonozesafuk.weebly.com/uploads/1/3/4/6/134600303/1546453.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://bekivuxuga.pbworks.com/w/file/fetch/144413796/80242083762.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3bfa1074-3446-4c3e-a400-9c4bfcf82a63/28082406342.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4fd3af6b-0e6f-4066-a23d-7e4e3c0e6cc7/vojon.pdfIn PDF document text
- http://xosufixemuf.pbworks.com/w/file/fetch/144477504/lavazogedib.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2ea9d03f-2772-4f7e-b43b-9774f6abfa3f/diablo_3_necromancer_corpse_lance_build_season_21.pdfIn PDF document text
- http://rorazokazog.pbworks.com/w/file/fetch/144505356/panimux.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5628acc6-5763-4982-bb8c-6b6523509b06/minecraft_pe_0.15_0_maps_apk_download.pdfIn PDF document text
- http://lakebimutep.pbworks.com/f/the_five_love_languages_singles_edition.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3a6ffde1-baa8-4cf4-aeff-f1df1be13d92/ratejovuvi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7c8743cb-7472-4b58-b02c-e7a79029ca07/advanced_algebra_w_trig_trig_identities_worksheet_2_answers.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eb6b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB6B | 5644 bytes |
SHA-256: 4d9046ad15344bf8dfb0975d7c9c498c8d714687400fb22a6ab27c78ba7785d0 |
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font_01_sfnt_off0000fe69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE69 | 10728 bytes |
SHA-256: 125e42a7ed5c037b75dbf9a0868cb2fd428634e732f991bf906236012adda21a |
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font_02_sfnt_off000122ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122ED | 4324 bytes |
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
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