MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The presence of a 'Password-protected archive handoff' heuristic suggests the document's purpose is to trick the user into obtaining a password for a separate archive, likely containing malware. Numerous URLs pointing to compromised CMS uploads and link farms were extracted, indicating a distribution infrastructure. While no scripts were explicitly extracted, the nature of the heuristics and the embedded URLs suggest a phishing or malware delivery attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://smidgel.ru/uplcv?utm_term=muscle+contraction+animation+gif
- https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/cp3l6ts1tuisnr59njogbg2cd7/vurixewige.pdf
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd440edcd14---gumosipubobozadon.pdf
- http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/5bj2opsfs5s821sneclhtu99r2/43684851783.pdf
- https://oilbasaro.com/web/images/ckfinder/files/20210611185529.pdf
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/235daa25e7d6666e3e4dfb36babe2f8a/94853656819.pdf
- https://nbtele.com/en/cache/fck_files/file/biler.pdf
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/9uu00jjoj61kkc138rv0r68e1p/18790989852.pdf
- http://digimaap.com/wp-content/plugins/super-forms/uploads/php/files/8r1hjln7q7225quikmluplf85k/gamowoboxap.pdf
- http://evpltravel.com/xv_image/file/55457305329.pdf
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c95c5409739---24211593404.pdf
- http://nexxosrealty.com/userfiles/files/bevowarajerejat.pdf
- http://alexforstarlight.com/clients/4/41/4125d763bdae894b2c088b8c4c0f4705/File/48101371945.pdf
- http://trustarshida.co/cache/fck_files/file/xeximixovuguxek.pdf
- https://jaiminsales.com/ckfinder/userfiles/files/86110191871.pdf
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072c78d69dbc---xulojelefepadedegapil.pdf
- http://chistogood.ru/admin/ckfinder/userfiles/files/80332997216.pdf
- https://cornerstonelaw.eu/userfiles//file/54164676925.pdf
- https://suprizpin.com/calisma2/files/uploads/tovadizanege.pdf
- http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/kbamfh4b2s3h06dr5c7iodfsh0/6807973456.pdf
- https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/f8ce9e13ed0ca4542efb3a1370399d89/lupexaxapolopelilizuf.pdf
- https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/198e929d4196c90895a5bcd31cf171e2/88243656838.pdf
- https://medtek.vn/storage/file/69106702562.pdf
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160885cde9c240---rumojulexazibewubusa.pdf
- http://zrdb-drogbud.pl/Upload/file/5638432862.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_off0000e6bb.binc8638919d089ad073e03f9001b04b5ec8e48b2dc91b32a71115adcbc85d98d19 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6BB | 16744 bytes |
font_01_sfnt_off00011263.bin4929b4d5f313312530f7909205f38c3ce0f8027bce655de6beeef3fc5a62522f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11263 | 10772 bytes |
font_02_sfnt_off00012b35.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B35 | 16792 bytes |
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