MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, many hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of 'urgency' and 'download button' lures, combined with ML and ClamAV detections, strongly indicates a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and link farm heuristics point towards a malicious workflow.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 8
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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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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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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://drafthe.ru/uplcv?utm_term=android+mp3+player+app+no+ads
- https://biocoils.com/img/file/79894366198.pdf
- http://star-transform-moscow.ru/uimg/files/78673348735.pdf
- http://luatsugiadinhviet.com/upload/ck/files/73114248484.pdf
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613dd9d39894a---zepagev.pdf
- https://airshow-bg.com/file/lututatopinasej.pdf
- https://sydneystudytour.com/accounting/userfiles/file/nulokunebabakuwabuze.pdf
- http://studiogallerani.it/userfiles/files/62430602833.pdf
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/0r6kv4nkiu3ajn525dd0re3ht8/rivasidizaziminubuzokawi.pdf
- http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210909231629.pdf
- https://kimtuong.vn/isc/public/files/fckupload/file/wawegadivufopurikevavozas.pdf
- http://kowel.com/ckfinder/userfiles/files/1631310337.pdf
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133e4e873895---51661472242.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/ihhrmslqhs38c97kgdt1d99ul0/27630514962.pdf
- https://dynasty888.com/image/files/20210908_041541.pdf
- http://grupopiscis.com/upload/files/jenapijiviro.pdf
- http://brmxn.com/userfiles/file/20210910191408_df38ib.pdf
- https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/4707f97ccb0ed376230013d33a56cd1e/23101216060.pdf
- http://ccshecea.org/upload/files/72561615382.pdf
- https://almuhja.ps/ckfinder/userfiles/files/rasexutagifunitemus.pdf
- https://vresponse.net/userfiles/file/dusafevidipazelu.pdf
- http://artepcb.com/upload/files/7340837955.pdf
- https://pbanerjeeservices.4digitmagic.com/userfiles/file/27503225468.pdf
- https://henseltech.cz/userfiles/file/99252221122.pdf
- http://motocams.cz/ckfinder/userfiles/files/zazaxok.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_off0000de42.bin55288590d1d295ab2345e0657dd796973ae6ba02fa1b9394f22cd3c8e169d290 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE42 | 21328 bytes |
font_01_sfnt_off000116b7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116B7 | 16792 bytes |
font_02_sfnt_off00012ece.bin71392858cb50fa0432ea1eeb91f03cb423b52fa2629dadde73523513b547bc1e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12ECE | 10724 bytes |
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