MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 7
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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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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://smidgel.ru/uplcv?utm_term=absceso+hepatico+pdf+cirugia
- http://rfychina.com/upfiles/files/16278261125402.pdf
- http://pileshoppen.dk/userfiles/file/42476453985.pdf
- http://amsaneeraus.fi/userfiles/files/22531526646.pdf
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/1mdqmbkn67amrealog78o24hid/64706470591.pdf
- https://resonanceacteurs.nl/userfiles/file/junezewikoboz.pdf
- http://alnoorcity.com/userfiles/file/19559349472.pdf
- https://acronimocostanzo.com/userfiles/file/rilagoganosige.pdf
- http://smartcevent.com/clients/871459/File/38297443624.pdf
- http://jumpstart.mobi/userfiles/file/56677177074.pdf
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/gidhvl1uauk2idnjb7vip84362/powerufulekerirolazulomel.pdf
- http://beerskiboot.com/img/upload/file/79946324186.pdf
- http://pomocnaukowa.net/Upload/file/dokefogetofogopav.pdf
- https://farmacieitaliane.com/documenti/file/jazifovividotoz.pdf
- https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/8d387d6cd60d2406f759096d98764fcb/6778508611.pdf
- https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/6d7222b88a359dd9f63448951e6fc95b/34932360708.pdf
- http://broomfield82.com/clients/4/48/489ff1710263d1ca947d92387d56c809/File/fofawewotademesabemowukav.pdf
- http://yishiweb.com/upfiles/files/20210620_045429.pdf
- https://campermagazine.tv/public/file/sivebiwirefobajediresumip.pdf
- https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/ac2d3202229e308d099033e7e8744771/42538224279.pdf
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/8076cf6096b7d7d3399770b28f724293/74642594059.pdf
- https://callmarkinvestments.com/callmark/files/18266496730.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_off0000d6da.bin0842b947e0099a2206a604240afd8548c625aed13dfe2bdfa6dd614a521f908f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6DA | 10972 bytes |
font_01_sfnt_off0000f00f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF00F | 16792 bytes |
font_02_sfnt_off00010821.bin7d7825883feba2455be4370b3c5646692c008ab1a1b1ae9f8f79ec25705afb66 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10821 | 18928 bytes |
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