MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF employs an image-based lure, a common tactic for phishing or malware distribution. Multiple heuristics indicate it's designed as a link farm, directing users to various compromised or disposable hosting sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to download a second-stage payload or redirect to a phishing page.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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 http://ntouioc.ntou.edu.tw/ckfinder/userfiles/files/tiworugo.pdf
- https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/46skp0r4q4k1sncm08obasv6vm/kirariwewufimumatubov.pdf
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/acdf66dffc9079cab3e3e36212db9253/5549204245.pdf
- http://timebank.ru/sites/default/files/photos/pagefile/41827866734.pdf
- http://birkhoffhi.com/userfiles/files/gapefuzizosivexabapan.pdf
- https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/48c5eae58022b073e0ceb2bd6e84a808/68613517279.pdf
- http://verynailscm.com/user_img/file/17106392259.pdf
- http://lakshimi-kaatsu.com/user_data/packages/default/imgfiles/34259784990.pdf
- http://altaprecision.com/userfiles/file/20094807587.pdf
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5c4915b03---12307480378.pdf
- http://solo-reisen.com/media/images/file/43434894515.pdf
- http://edeins.com/userfiles/file/31684497407.pdf
- http://sangjeom.com/userfiles/file///zifimijekumuditexupufak.pdf
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/161402c9b49929---79440803045.pdf
- https://dursunguney.com/userfiles/files/simoxuwubufasusekivak.pdf
- http://ubytovna-krumlov.cz/userfiles/file/16824816173.pdf
- http://auksozvynas.lt/userfiles/file/mipetituvojasolix.pdf
- https://jackyrouxmethode.com/userfiles/file/tosarowukoramobesi.pdf
- http://trineckevzdelavani.cz/webpagebuilder/ckfinder/userfiles/files/50587302643.pdf
- http://gradn.ru/uploades/fckeditorfile/wojiremidizozesubizusog.pdf
- http://beamstraffic.ae/amb/userfiles/file/48442374729.pdf
- http://radissonhoteltraining.com/userfiles/file/68685647008.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1614160e4efc19---20237656049.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=why+do+some+contacts+have+photos+android
- 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_off0000ae91.bin3b470a8fd72a485859f9488eaea74e116ec8c4dfebcc1461b6ad61ef1729acca |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE91 | 10908 bytes |
font_01_sfnt_off0000c7ae.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7AE | 16792 bytes |
font_02_sfnt_off0000dfc0.bin787815d15f825ad330deea61b72cc3fdb140ac52e2a8863970ceddabc82e967c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFC0 | 14124 bytes |
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