MALICIOUS
252
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains numerous links, many of which point to redirector infrastructure or disposable hosting, indicating a link farm designed to distribute malicious content. The presence of a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK and ML_NYX_PDF_MALICIOUS strongly suggests malicious intent. The document body, though heavily obfuscated, contains a reference to 'fb apk download old version', aligning with the lure of downloading potentially unwanted or malicious applications.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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 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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/123?utm_term=fb+apk+download+old+version In PDF document text
- https://cdn.sqhk.co/jigavozef/jhidjeH/45020551788.pdfIn PDF document text
- https://cdn.sqhk.co/leredupodeka/jggehdp/basketball_stars_miniclip_backboard.pdfIn PDF document text
- http://zdorovie-vashe-vse.xyz/tadisivizepasegjkdo3.pdfIn PDF document text
- https://cdn.sqhk.co/kuzosexiwugu/hiidhhi/torogumigubibalofemosot.pdfIn PDF document text
- http://reform-st.ru/wetatemoxonoxoxologolezsoh8.pdfIn PDF document text
- https://cdn.sqhk.co/xuzuvazol/55ihgjf/dirt_series_off_road_racing_android.pdfIn PDF document text
- http://olymp-trade.top/roserudurarouop92.pdfIn PDF document text
- https://cdn.sqhk.co/sujubowip/ahebicX/hot_rod_movie_director.pdfIn PDF document text
- https://safubijob.weebly.com/uploads/1/3/2/6/132682970/8742147.pdfIn PDF document text
- http://sizegivip.22web.org/best_photography_website_templates.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
- https://s3.amazonaws.com/navoburarovada/descargar_cydia_android_apk.pdfIn PDF document text
- https://s3.amazonaws.com/padadutiseni/nadalamotegikodinanatupej.pdfIn PDF document text
- http://nuzavaxevarap.epizy.com/81235017254.pdfIn PDF document text
- https://s3.amazonaws.com/tikoweravisixu/36956395862.pdfIn PDF document text
- https://s3.amazonaws.com/vifusupegiza/tixumotezepemo.pdfIn PDF document text
- http://vogidide.epizy.com/management_discussion_and_analysis_report_2016.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_off0000f553.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF553 | 4972 bytes |
SHA-256: 4277c8aed0c8203b9cfb61bb122d293a94d006fd1ac0c83ec96bde491b022b9c |
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font_01_sfnt_off0001064e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1064E | 10328 bytes |
SHA-256: 30391b5ccd818eb6d530004b7d8d5d4d56d5bf7d5fbbadeff80a5dcd7ca2c6c7 |
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font_02_sfnt_off000129c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129C6 | 4324 bytes |
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
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