MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to multiple PDF files hosted on compromised CMS upload directories. The presence of embedded URLs and the nature of the heuristics suggest this document is part of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
Heuristics 6
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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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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://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070369bbafec---95651957479.pdf
- http://munsusa.org/userfiles/file/20210612055122.pdf
- http://daugiavanthienphuoc.com/media/ftp/file/rutigezido.pdf
- http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160af9dbaaae73---donajujajorul.pdf
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d411c163d90---zerunuropelov.pdf
- http://benhvienlaptop.biz/userfiles/file/texupemokozenevudirulip.pdf
- http://superpart.com/files/fexeporaxawazasize.pdf
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d07db8fdf0a8c26d7efc0e1a2ea03bbd/60062854062.pdf
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/2emmrf29shm9qjhoqont4keo3j/81716603947.pdf
- https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/087cec72d7b11ccce0a2b1d86d1d95d3/26794729152.pdf
- http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160836b01e81e4---17893320035.pdf
- http://sake2metustin.com/uploads/files/36625214646.pdf
- https://glbtrader.com/userfiles/file/gafaluxibutiwivopug.pdf
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607c389d1648e---13526429547.pdf
- http://escuelasfutbol8.com/docs/files/25542752360.pdf
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/qjjvggq3nt5ohd851np24gu0uh/81450468098.pdf
- https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/6ccb045969fdd255133c1ed30e5a5aa1/89672296483.pdf
- http://cl-pub.com/files/files/3985718418.pdf
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/nlb2l49as4cljktvo7ooeibl3k/87583170063.pdf
- https://altbuket.ru/files/gasoxidazogosomomeli.pdf
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160889cbf9e66e---sifimalavotut.pdf
- https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/kqrvkvlhrgps6k9hr847hl9ptr/66665843061.pdf
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16091035673e60---63203751106.pdf
- https://asiarsolutions.com/userfiles/file/22677233014.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=chicken+noodle+soup+easy+lyrics
- 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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e92e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE92E | 16792 bytes |
font_01_sfnt_off0001013f.bin885b9024a80bd539ee88f4c17c1e1fa3cc6dab475ff5b740ebf17c73a317c9ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1013F | 17112 bytes |
font_02_sfnt_off00011a26.binebc54e396a78c9fefdc4342dfb1ef0e4a48e2357dc049c78e944ab599db3f135 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A26 | 10852 bytes |
font_03_sfnt_off0001332a.bine012edb4ab5062fb714ff08c01338132ec62daa4f1148dd5fc76698a6c118125 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1332A | 17588 bytes |
font_04_sfnt_off00016130.bin15171638d69c9281a983de8a04f8d213e5ed86d33053034f6aa0dd130c4010d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16130 | 1700 bytes |
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