MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF was flagged by multiple heuristics as malicious, including a link farm pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV also identified it as a phishing trojan. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's not intended for direct user reading but rather to host a collection of links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://tfh-filter.hu/_user/file/zizapagibu.pdf
- http://ahdongjiu.com/upload_fck/file/2021-5-3/20210503141911995396.pdf
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609584af71487---74937888516.pdf
- http://tehnicgaz.eu/files/file/gawojal.pdf
- http://hoangduy.vn/vn/files/tigexovitovomi.pdf
- http://afayl.com/userfiles/file/88866611665.pdf
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609d3e005a086---fomazelosamozidogutavi.pdf
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/a2a4710d968c6af6a94b8c31204dc4de/92347412924.pdf
- http://ceraunavoltapizzeria.it/userfiles/files/pefajejopofexoderade.pdf
- https://bestcoloringpages.com/userfiles/file/zesexutomeli.pdf
- https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/8ba3101314dc429fa49a119e638ecafe/levunawobenuj.pdf
- https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/pm1mo2g1u11kj8o7t77iqrofn0/79229233877.pdf
- http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/86935384850.pdf
- http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/e57cd3d345e0935088610be1f9b76e2b/53350175069.pdf
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/o855dorqf0prblb71bh34fe2m5/lajetu.pdf
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d82c218c0c9---romitegewunije.pdf
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/4844a9abb9b179a7e0ebab2dd8dfe54c/rowonaxizogimazinu.pdf
- http://scuderieverdina.it/scuderia/userfiles/file/80735251958.pdf
- http://homelife-superstars.com/image/files/weradogakuverebiso.pdf
- http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/cd09da3570e0d42936a3fd9a821a0a63/ditadogefobugawenof.pdf
- https://sacc-la-chaux-de-fonds.ch/fichiers/file/83176756348.pdf
- http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/b9ffb4cd9464de64ab93c573225f22e5/jifaponomikidolixuxa.pdf
- https://www.htlexpress.com/ckfinder/userfiles/files/67527955255.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c58ccbe1128---4842587502.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1610d37bc9375e---tepiralusikemo.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=restoration+period+english+literature+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_off0000bca8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBCA8 | 16792 bytes |
font_01_sfnt_off0000d4bf.binb9022e45183b103a5830482f2d3bf4ca142741f73ca1cb012d762d1b4c21a958 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4BF | 10924 bytes |
font_02_sfnt_off0000edbe.bin87f074abdea5932fae0720534b88a57331ecb4227529c3c0eac3ca759e1e0784 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDBE | 15936 bytes |
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