MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to compromised WordPress upload storage and disposable hosting, suggesting a link farm used for distributing further malicious content. The 'SE_CALLBACK_LURE' heuristic indicates the document may be designed to trick users into calling a fraudulent support number, a common phishing tactic.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c2d75381a---fuxezisosolojowufolep.pdf
- https://isabellepieman.com/userfiles/file/roxotenaxunewizesemosadab.pdf
- https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/f563e5895c0e0865f683318af8ecf85f/96286794722.pdf
- https://adasms.fr/userfiles/file/gaxepagerikexenejid.pdf
- http://papaicountrylodge-longstay.com/user_img/files/nurudanekiz.pdf
- https://queensflower.nl/clientfiles/valuzitagibezadedikamo.pdf
- http://dienmaythanglong.org/uploads/files/julanakam.pdf
- https://proxus.nl/file/vedefifugom.pdf
- https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/j3ohlv4me9kr09ij3a28bt81cr/11045407663.pdf
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f678ce0e4f---21056791594.pdf
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/8c1045c0504d21fb67cf9f014f78e5cd/60779701158.pdf
- https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/to7majdbe0lm3smg30ki8dgavi/mekametil.pdf
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160792c93d0034---fijejiluni.pdf
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a514bd0e5b---welidita.pdf
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d61b3a393---91312961877.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a0e941315---5903040974.pdf
- http://zap-interactive.com/uploads/files/3363222594.pdf
- https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfef07174e---98829824539.pdf
- https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/divcnh6rjissnbn3hhjjjkh94c/92872591998.pdf
- http://petra-dario.info/upload/datoteke/lewixamedexoj.pdf
- http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160a47326026e9---90899132737.pdf
- http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/f4416fa3e1f4fd231af838fffe1ef740/45423772537.pdf
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607184143f258---xebiwixuji.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=department+of+labor+claims
- 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_off0000f486.binf08c5bee06b87417a5bfa9a81f817d6c9f8df8f4f606b5ce3a22104d4341ae1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF486 | 18180 bytes |
font_01_sfnt_off00012481.bin00e3f65dfc8a9221566bf051a8b4e851db828ca1705c357c0129105b1a6e3c79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12481 | 10780 bytes |
font_02_sfnt_off00013d1a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D1A | 16792 bytes |
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