MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of external URIs and link farm indicators strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 6
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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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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://hfbee.tw/upload/ckfinder_temp/files/20210701041644.pdf
- http://hcvitamin.com/webroot/img/files/bopere.pdf
- https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/js68ddfa0gvjgmmp85atgoia6l/269076775.pdf
- http://thehigh86.com/clients/13680/File/lipesuxabidexoj.pdf
- https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de2d4c6be57---terulapuzuwelibesosefu.pdf
- https://capecoralliving.com/media/file/wuzejorosunaromilajura.pdf
- https://svrcontractors.com/wp-content/plugins/super-forms/uploads/php/files/8363bf4316eec383cc059ecad811e4f3/17155859683.pdf
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e419d5bc2c2---86775619100.pdf
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e0ee047ab---90030210530.pdf
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/afdce5b650d1927646bf5ac1f643b7dc/fefapodi.pdf
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e692eb36138---47704974433.pdf
- http://alituncer.com/userfiles/file/34158009941.pdf
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/2da85486e25dbece3cdf5be439437b9b/14162212814.pdf
- https://cmsschoolkg.org/userfiles/file/97325779810.pdf
- http://agro-pasz.pl/ckfinder/userfiles/files/zugewinakelevavi.pdf
- https://bdsvieclam.com/upload/files/54516174386.pdf
- https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d270b4f06---22156796504.pdf
- http://iscyber.com/userfiles/files/33651830525.pdf
- http://nakamurasangyou.jp/app/webroot/uploads/files/vifaremoji.pdf
- http://bigband-ulm.de/userfiles/files/bipidunaberivanepajaziz.pdf
- http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/15eeun5bfnbu2j3955gkc7f4jn/56733709106.pdf
- http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16107f7e1bc14d---firalevoxa.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=oxford+synonyms+and+antonyms+book+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_off0000c625.bin4d23dc42fbf784b172da4c97f80ec80f293533f9dd215859903a73eceb292f3f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC625 | 17188 bytes |
font_01_sfnt_off0000f26e.bin5d01939c48e0d67f1011203ddc0ce054eabbb3e561dbe2c71e95d8e96892b724 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF26E | 10860 bytes |
font_02_sfnt_off00010b63.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B63 | 16792 bytes |
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