MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is a PDF that contains numerous links to external websites, many of which appear to be hosted on compromised WordPress sites. Heuristics indicate a 'Browser Install Lure' and a 'Download Button' which, combined with the ML classifier and ClamAV detection, strongly suggest a phishing or malware distribution attempt. The document's content, though heavily obfuscated in the DOC BODY, likely serves as a lure to prompt the user to click these links, potentially leading to the download of a second-stage payload or further exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9860
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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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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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://synerhu.ru/uplcv?utm_term=dwg+viewer+portable+free
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/e7da939b30a19ab00994382dbdc471b9/51583832413.pdf
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a528492fecd---41930880710.pdf
- http://perfekttorun.pl/pliki/68983209270.pdf
- https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/aea806470826e8abcf087ba8f2e66046/80625999193.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/59f7e4985ea2d00546e0166827561790/45867595647.pdf
- http://herbwaterthailand.com/userfiles/files/67350540412.pdf
- https://rybczewice.pl/userfiles/file/zimuxerepolasuvezejam.pdf
- https://sambelteri.com/contents//files/xeduw.pdf
- https://ctapigroup3.com/contents//files/lilolamalos.pdf
- https://roeveragri.ac.in/wp-content/plugins/super-forms/uploads/php/files/710837e4703f0ff088b288722ff8c165/wesuvonotuxelalidojenewon.pdf
- http://illinoislivestock.org/userfiles/file/45420624262.pdf
- http://asupuro.com/user_data/image//file/3562218485.pdf
- https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765484436ed---soxaxal.pdf
- https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/4ce57e9484cdeba8253806bb95a06f34/64115031819.pdf
- https://www.chablis-gautherin.com/ckfinder/userfiles/files/xefufirobuzerugawigif.pdf
- http://electrogalicia.com/electrogalicia/recursos/archivos/jafijelebawazaradade.pdf
- http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071eb67ca79a---bigekutumonixaredu.pdf
- https://rubin2000-distribuitorshop.ro/userfiles/file/10535315182.pdf
- https://olivierdaulte.com/ckfinder/userfiles/files/71530993646.pdf
- http://acpiindia.com/userfiles/file/89076341619.pdf
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c14f7ae4c3d---16988558437.pdf
- https://angelsstaff.com/uploads/file/27940181157.pdf
- https://twr1115.net/files/fckeditor/file/57278146131.pdf
- https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/98aba065e89ac2b05e99daf39949f6db/37290823652.pdf
- https://ascinfratech.com/clientprojects/trading/file/difevagofuzovexinupu.pdf
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/pfdgl1gkpf2j5sfvqbmdi6s6b3/juxeriterapubovukazi.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e7d6.binbd4f14f7a3672418abf1e69585fef0f58bcd6a68fc054450347ea087daf1fc74 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7D6 | 16552 bytes |
font_01_sfnt_off000112e3.binffc0cc3882ba2db1f5dbce54574a402304ef1b3278c0c3126423d475c2a78f2d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112E3 | 10556 bytes |
font_02_sfnt_off00012aed.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AED | 16792 bytes |
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