MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to distribute malware or lead users to phishing sites. The presence of a 'download button' lure further supports this. No scripts were extracted, but the overall structure and URL analysis point to a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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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 http://brickchamber.com/ckfinder/userfiles/files/60355543390.pdf
- http://mvdeastudio.it/userfiles/files/newalofogisujomuve.pdf
- http://shengyaweb.com/uploadfile/file/2021090914451947.pdf
- http://amuseonline.com/absite/userfiles/file/jegatejutojefedikobavi.pdf
- http://szamosiszerviz.hu/feltoltott/files/taxugawabowaxopetazale.pdf
- http://thepnguyentran.vn/media/ftp/file/rememi.pdf
- http://demirlermetal.com/resimler/files/19790186720.pdf
- http://qiangka.com/ckfinder/userfiles/files/vemizuzuxixoludesofilofa.pdf
- http://kystar.net/filespath/files/20210918042233.pdf
- http://boxshop.mn/userfiles/files/4177614377.pdf
- https://likeevent.it/writable/public/userfiles/file/gorekerufijopo.pdf
- https://andreivieru.com/ckfinder/userfiles/files/89548235553.pdf
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16137709ee13a5---38731376187.pdf
- http://zbraneklapka.cz/ckfinder/userfiles/files/31860928402.pdf
- http://rovitek.com/userfiles/file/97366339273.pdf
- http://ky-auto.com/uploadfile/files/56492807998.pdf
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/dgak1eav2h2ikk1his5b06fovp/zutut.pdf
- http://naszemotyle.natura2000.pl/imgturysta/files/sixunojasalon.pdf
- http://qualityspices.in/ckuploads/files/93519211086.pdf
- http://gesundheit-im-blog.de/userfiles/file/15293731806.pdf
- http://mygotour.com/FileData/ckfinder/files/20210915_902819EFEDDD5CEF.pdf
- https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/iguqeq6a73p96jron9qkuac5k1/41286618326.pdf
- https://pet-fashion.ro/mm/file/jasubugowe.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=adobe+acrobat+premium+apk+full+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_off0000dabc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDABC | 16792 bytes |
font_01_sfnt_off0000f2ce.binbc92b72061666b6698d109e2676ed81827e6a0813eb3741132f0d94416a71981 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2CE | 20048 bytes |
font_02_sfnt_off0001259a.bind0c76e5e4bec5837cf1c827a154206a1d6374ed8d0fe29def47bf161c508c94c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1259A | 10924 bytes |
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