MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning model indicated a high probability of maliciousness. 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 presence of multiple external URIs and a link farm heuristic strongly indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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 http://anhuishangbiao.com/upload_fck/file/2021-5-5/20210505125903444730.pdf
- https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b8998059ef38f72795b6da1a9d8c0cec/63987743813.pdf
- http://chineseclothingonline.net/File/xavepurubivudomikasipo.pdf
- http://fobosgrunt.ru/files/ckfinder/files/kisoxowefipubozuxasu.pdf
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/47510ae04476bfc75b0455aac4584068/92481128874.pdf
- https://baongochoa.com/upload/file/sogalukinilimemalexonap.pdf
- https://grup-insaat.com/userfiles/file/mavixiwineledasezurase.pdf
- http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/fdnj7njl9ftjemms5lo548u2o5/sirariwizokikatobugif.pdf
- http://geoodwierty.pl/files/file/lafuzem.pdf
- http://alt-1c.ru/userfiles/file/kipuwamutifu.pdf
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/3ff6ec25c94ba41ecccbd6d3a5fd5972/55449185647.pdf
- http://syuncyoku.jp/upload/file/sogepalexoviposinu.pdf
- https://5a.ro/ckfinder/userfiles/files/balibe.pdf
- https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/c6f4f6f08331f0627a2abdf46aa259b4/70345738902.pdf
- https://hglobaltourb2c.com/FileData/ckfinder/files/20210621_090D8CD19B77774D.pdf
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/401b9e16b5dba1d81eb9d907292399f9/42674746008.pdf
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a216fb59571---16697528503.pdf
- https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/f7242cf339e7fa30bd50f17e997b69dc/zefigiviwuweda.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/gidep2ndj89206rpeca4j5ehqc/geduvugevalidizo.pdf
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/nis2gngliijl1e674l6hlh2be7/27126367996.pdf
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608db09f0da76---kaved.pdf
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/88e057a3dcb51ec6f502782f873fc023/surafifasafivuf.pdf
- https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/v9e7juhfj3qgtk14uqdhbdlm8p/51512062550.pdf
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0606ed005---xunitunezafuparoxofo.pdf
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160aca92cb3d4c---23185864783.pdf
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/04c1354c64e14e678796a12ea35a4783/66172571938.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+download+a+song+into+imovie
- 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_off0000f3e4.bin1404ec4fdffad90e186ebdd8d8abe7905d09557e85c92ccd4065f91679b144fa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3E4 | 10636 bytes |
font_01_sfnt_off00010c05.bine1ae4e2b8fd8346872936bbe484d7235b372e2d2c6ac3df05237f6f122c48f1d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C05 | 17084 bytes |
font_02_sfnt_off00013891.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13891 | 16792 bytes |
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