MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous external links, many pointing to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, further indicating a non-legitimate purpose.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 https://philabc.ru/uplcv?utm_term=comparative+and+superlative+exercises+with+answers
- https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160963569ce58d---bitobojot.pdf
- https://leosservices.com/userfiles/file/4716047836.pdf
- http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160899c076c010---33105629110.pdf
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bf5a9f707---51343036473.pdf
- http://dakmet.pl/upload/50772730534.pdf
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/12c3583c644d42cadb4e77e58c18e310/74482805677.pdf
- http://kapli74.ru/upload_picture/76718756486.pdf
- http://piau-po21inn.com/CKEdit/upload/files/gotelilanudojazinos.pdf
- https://activepymes.com/pub/file/13843085420.pdf
- http://kcde.kr/userfiles/file/lurun.pdf
- https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/cd2bfe5f8ad7b3d9171983924abef0c8/96577726791.pdf
- http://humanitool.ru/userfiles/file/43457588977.pdf
- http://abpaluso.com/upload/file/rabog.pdf
- https://www.visitrwanda.com/wp-content/plugins/super-forms/uploads/php/files/f7e28e823dc0b98216ed741f0c3d5acf/volavigukasenukigelu.pdf
- https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/pmb1rut57j3t6ioe0gbg3ofnau/xudekaxumat.pdf
- http://ahdongjiu.com/upload_fck/file/2021-4-29/20210429171439950286.pdf
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a5f3bc330---penixuvojipitogurajopaf.pdf
- http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609833fdcd27d---rirovasimijaxoziw.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4c410ee01---geruvu.pdf
- https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/33eb9203c8d60d32e8dd546198708043/17430790316.pdf
- https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c6deac22b65---kipenofalibadakov.pdf
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c15baa63618---75969942628.pdf
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c962cd51d46---lelovoxom.pdf
- https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/3a583191c24ad0c1274e09fd6ff52ad7/163945547.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_off0000bfd1.bin73066d09c5037929ce533ed66a94a5693f684d560cbff2ae63b8f80294fd6ddf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBFD1 | 11164 bytes |
font_01_sfnt_off0000d9cd.binedaf76c3a5559f4613e41075d5bc477fdcebc524a589a1fb66f06ff9e30c533b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9CD | 15300 bytes |
font_02_sfnt_off000100e3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100E3 | 16792 bytes |
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