MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains a large number of embedded URLs, many of which point to compromised CMS upload directories. This indicates the document is designed as a link farm to redirect users to potentially malicious content hosted on these compromised sites. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9941
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://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/96ce4df956ff23ad378f4afd7899b1fd/94646086016.pdf
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/0fbe3892ebe27b8debab4bdfa03d3be5/52587716113.pdf
- https://cafemocion.com/userfiles/file/87893095451.pdf
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160838b2d1f220---11104190582.pdf
- http://stalmont.eu/userfiles/file/5498277124.pdf
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609cff57915fd---29308247432.pdf
- https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1608154e562aef---3105285562.pdf
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/0q0gejfsbapgka4u11ks8d2g7p/luvaxefopoliv.pdf
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d4c5a6e416---51038709144.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/gj3h0obb5chfkkfu4vjtopu9c6/dejipulefaduzesodexurowut.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/64b99f7024b3e8a8529f06ac7cfc7b18/8020062075.pdf
- https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/i254nrm34tfhi1rfubbili581t/16693020809.pdf
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/090fad3559ebd11070477efc779145f3/pagapoferudofu.pdf
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c2193ba443c---xokozi.pdf
- https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/42563c08dd81cfadcb584fd613ff05aa/24268085593.pdf
- http://bioident.pl/photos_fck/file/80121995921.pdf
- http://soles2walk.cz/data/file/79368561144.pdf
- https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/35341c95c228e451f8f5c2ec15d6e869/pipejinugofawa.pdf
- https://muratay.nl/userfiles/file/zipexarov.pdf
- http://alphasigmaoverseas.com/userfiles/file/59202035817.pdf
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5a7f4b95d---zaminitorubofosukiwig.pdf
- http://vorne-sitzen.eu/pcms/content/file/73581542315.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=haha+in+other+languages
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fa3d.bin5891ae4002dcaf4f358aa972c76c024ed47d2869789775cd4f48d70f9f9973a7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA3D | 10476 bytes |
font_01_sfnt_off000111f2.bin4325feae9ae765bfa0fced65cd5a14005dc59b605b21d987305d227da56230d6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111F2 | 19832 bytes |
font_02_sfnt_off0001440d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1440D | 16792 bytes |
font_03_sfnt_off00015c1a.bin1f972cc144268a48c11be0cac6c8708a9d0a442bfe18f00b269907e0a044bfb1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15C1A | 3212 bytes |
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