MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple embedded URLs, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to phish or deliver a secondary payload. The document body's reference to a 'critical ops mod apk update' serves as a lure to encourage users to click the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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://yafferge.ru/aws?utm_term=critical+ops+mod+apk+update In PDF document text
- http://tasimidu.iblogger.org/fortnite_challenges_cheat_sheet_week_2.pdfIn PDF document text
- http://vasowenotaruso.22web.org/printable_math_worksheets_for_3rd_graders.pdfIn PDF document text
- http://tifubuza.22web.org/wnyc_app_android.pdfIn PDF document text
- http://gedawuxofawu.iblogger.org/box_spring_cover_sheet.pdfIn PDF document text
- http://bimiwefumukiv.22web.org/pidedodavevubetavazu.pdfIn PDF document text
- http://nufogikije.22web.org/bengali_typing_software_free_for_android.pdfIn PDF document text
- http://lemixebu.22web.org/boot_camp_version_6._1.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://gagisomix.rf.gd/5475354416.pdfIn PDF document text
- https://s3.amazonaws.com/wunojipu/najom.pdfIn PDF document text
- http://fasevebozumip.rf.gd/kabusenosi.pdfIn PDF document text
- http://wetafemef.epizy.com/wopomolaxevesuwivafutono.pdfIn PDF document text
- https://s3.amazonaws.com/gitipelut/vunarugubevamatonirituwup.pdfIn PDF document text
- http://lazunebenak.epizy.com/86785553186.pdfIn PDF document text
- http://nidemavaguwagev.rf.gd/lake_lavon_fishing_report_2018.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ddd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDD0 | 5188 bytes |
SHA-256: 5536eba6c19d40f36d7e3d266c2bca24446b9da16eaea3921d56be35ec00f600 |
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font_01_sfnt_off0000ef58.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF58 | 10756 bytes |
SHA-256: 7963da42ab11919faa36caa8e163b3e050c81491ac830f008ec0f57e873b98aa |
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font_02_sfnt_off00011416.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11416 | 16136 bytes |
SHA-256: 6bd6cda04696584186cf1917ebb65d70a28576a2cf09a71ff67a2fb08a026c5c |
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