MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document is identified as malicious by multiple heuristics and a machine learning classifier. It functions as a link farm, directing users to various compromised websites, and includes a callback lure, prompting users to call a phone number under the guise of a billing or security issue. The presence of embedded URLs and the nature of the heuristics suggest it is designed to facilitate phishing or scam operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 7
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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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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 https://synerhu.ru/uplcv?utm_term=ada+homeless+services
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/pggrbr2sc74rh0n1t266d15v74/wemoperojapo.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/16086465b2b34c---gaxefud.pdf
- http://kiuruvedenlukio.fi/tiedostot/file/76977918063.pdf
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/f5l51q6ngrbb8vhigfkr3uau3s/91500972822.pdf
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160982dda36224---xulevamegotikipode.pdf
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/f3b26910ed9b1d9901a110f768da1c06/divusekupisigukawuva.pdf
- https://argumentua.com/i/file/19273867664.pdf
- http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d0f21f757---walepajadonowafukudirap.pdf
- https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160778b0919bd0---dalefavasonevanesufisi.pdf
- http://jinanxintiandi.com/userfiles/files/puvowu.pdf
- http://josephlillianmorrisfamily.com/clients/59960/File/mizatoduzeduka.pdf
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/219aaf3d8a3c1615e4c14252ea094956/fakolelesemunera.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/3p9jlgq8pb08jp8011q0vh7ri6/lomojunukila.pdf
- http://obasekiestates.com/UserFiles/file/nuxorodabifujanexalavizer.pdf
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160709557b7614---79517163985.pdf
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f2d4ba04ae---34173320735.pdf
- http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073fe284bd9e---10925022355.pdf
- https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/ni5g9skb0cb1sdcscrk6kgvf16/33249709215.pdf
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/p6306rrgc7s4nmdfec350j4n5p/pigewonabozuvorejuwe.pdf
- http://kapsalonvogue.nl/files/file/29517393624.pdf
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c2fbf843543---wosusimuwutodopoma.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/6c1829c70aa1e7666eb20899480dd0a5/55859077293.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/302136575eb9c8dcc263696931da7835/3235369858.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_off0000c419.binc582c609a0a554af71fb64934ce5cdcb11fbafe513da738eba80afec3c874514 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC419 | 16944 bytes |
font_01_sfnt_off0000f04f.bin7396c028dcd04c294216791698a01be59e255d74615780653d8ea4be48703a91 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF04F | 10480 bytes |
font_02_sfnt_off0001081d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1081D | 16792 bytes |
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