MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS uploads or disposable domains. The presence of numerous URLs, including 'https://inwebjor.ru/uplcv?utm_term=video+star+apk+download', suggests an attempt to distribute malware or conduct phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://inwebjor.ru/uplcv?utm_term=video+star+apk+download PDF link annotation
- http://www.dilipprabhavalkar.com/images/file/25401694960.pdfIn PDF document text
- http://derp74.fooden.com/UserFiles/files/47185752768.pdfIn PDF document text
- http://thietkewebbacninh.com/webroot/img/files/felozimolasumuwineniz.pdfIn PDF document text
- https://comobrew.com/newsite/images/user_uploads/file/51052705251.pdfIn PDF document text
- https://istanajp.net/contents/files/bezim.pdfIn PDF document text
- https://npkfertilizerproduction.com/d/files/soxufuwul.pdfIn PDF document text
- http://penzionriverside.cz/files/file/48857788630.pdfIn PDF document text
- http://incomingmakedonia.com/files/files/78108793798.pdfIn PDF document text
- http://damnoen.com/ckfinder/pho/files/zixoronabupen.pdfIn PDF document text
- http://diagcorlifescience.com/attachment/file/31010984695.pdfIn PDF document text
- http://xn--3bsx3iw22bmot.com/filespath/files/20210910185327.pdfIn PDF document text
- http://ke-sen.com/userfiles/file/1630948132.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c8aa5810e7---36628778478.pdfIn PDF document text
- https://kheops-so.fr/ckfinder/userfiles/files/tunolukuduvikekugirenagu.pdfIn PDF document text
- https://kuni.ro/app/webroot/files/userfiles/files/3197088934.pdfIn PDF document text
- http://mobiliteit.nu/files/3783182216.pdfIn PDF document text
- https://agriturismoilcolle.org/userfiles/file/24695965700.pdfIn PDF document text
- https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/6c08ba3b1ec32faab3a207e268d14ab4/zunip.pdfIn PDF document text
- http://multiflex.ru/userfiles/file/70561946981.pdfIn PDF document text
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130300774dda---kovisumurupuguriw.pdfIn PDF document text
- http://hhoasis.org/app/webroot/img/fck/file/79061424984.pdfIn PDF document text
- http://flyingfish-stay.com/userfiles/file/suzelozotudabamuvo.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://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_off0000e03f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE03F | 18180 bytes |
SHA-256: c44f2a3c00a51de6b9ddbb7e9a3df6f41a75feb4940dcaf10d4cd5e90dd4fa17 |
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font_01_sfnt_off00010f41.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F41 | 10532 bytes |
SHA-256: a9f34b637d759a19709bc584e1cdcd29553ba395d77a3d9a1333d0d4a43eccea |
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font_02_sfnt_off0001276f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1276F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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