MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
This PDF file is identified as malicious due to its function as a credential phishing lure, specifically impersonating the Facebook brand. It contains numerous embedded URLs, many of which point to disposable hosting or redirectors, designed to lead the user to a phishing page. The heuristic 'SE_BRAND_CREDENTIAL_PHISH' strongly indicates this intent, and the presence of embedded URLs suggests an attempt to trick users into clicking malicious links, likely leading to credential theft.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 5
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Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://sapazepoxewi.weebly.com/uploads/1/4/1/7/141704902/dizosomup_bifub.pdf.
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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://yubit.co.za/YmrXLWy8?keyword=titrasi%20alkalimetri%20pdf%202019%20free%20pdf%20file PDF link annotation
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16205ed930a7b5---76788036725.pdfIn PDF document text
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1627918ae38e46---22481335493.pdfIn PDF document text
- https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/0a50815f077e02d5ab243cc968e8fb49/numeropagiva.pdfIn PDF document text
- http://www.polni.si/Images/files/nugemiripumejatutibone.pdfIn PDF document text
- http://malerbetrieb-malanders.de/Webseite/pics/fotos/1/file/12407262013.pdfIn PDF document text
- http://petrovaskola.sk/userfiles/imagefile/12715075094.pdfIn PDF document text
- http://wannawwannie.pl/userfiles/file/55254576396.pdfIn PDF document text
- https://sapazepoxewi.weebly.com/uploads/1/4/1/7/141704902/dizosomup_bifub.pdfIn PDF document text
- https://mevaledemoxawe.weebly.com/uploads/1/3/4/6/134633525/wujolafetazi.pdfIn PDF document text
- http://gomientrung.vn/uploads/image/files/24035807109.pdfIn PDF document text
- http://vinmexindia.com/uploads/79264465412.pdfIn PDF document text
- https://regeneguwutow.weebly.com/uploads/1/4/1/3/141391647/a50da9ced.pdfIn PDF document text
- http://photou.cc/ckfinder/userfiles/files/fosezeridunawepa.pdfIn PDF document text
- https://elrey-uslugi.ru/media/file/tefef.pdfIn PDF document text
- http://angel-conference.org/upload_fck/file/2022-3-28/20220328230943588542.pdfIn PDF document text
- https://kudarori.weebly.com/uploads/1/3/5/9/135960502/d61ad56f582.pdfIn PDF document text
- http://gomsuhoangminh.com/app/webroot/uploads/files/nunerem.pdfIn PDF document text
- http://submission.ksar.kr/pds/userfiles/files/fivusoduwusijedezavam.pdfIn PDF document text
- https://palinilejamoxub.weebly.com/uploads/1/4/2/0/142079759/boraranofugu-ruvevufot-jagigikune-zanezapixuvu.pdfIn PDF document text
- https://lotte-ppta.net/beta/assets/file/bemorukodewisodalawo.pdfIn PDF document text
- http://luisacortesearchitetto.it/userfiles/files/ditosazavaran.pdfIn PDF document text
- http://syuncyoku.jp/upload/file/50750676685.pdfIn PDF document text
- http://www.bitstream.comIn 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000700c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x700C | 10040 bytes |
SHA-256: 425552427e1959dc799afdfb713172165fedc22120ac2f8639db876ed92dd2bd |
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font_01_sfnt_off00008891.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8891 | 8856 bytes |
SHA-256: 44c8af1385b163023526d0c5a4425e44828f10cb29aa1f39a301671e07e3757a |
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font_02_sfnt_off00009d0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D0D | 17240 bytes |
SHA-256: c0ad0de3b8ee68de191a68f57b1decdf89cdde3530026f6e050204364d2c384f |
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font_03_sfnt_off0000cbe6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBE6 | 8940 bytes |
SHA-256: 897a1d9f6f4b474150d2504b8fa79d1507a5ac285a7fb2bf61803f06dc51c46c |
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