MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs hosted on compromised or disposable domains, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a book title, potentially used as a lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/nvbfqdvgopqh1vj0t3l6ba2au4/tijowelubiximitasubu.pdf
- http://bkbflooringusa.com/userfile/abbey/file/gepirusegov.pdf
- http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160809f00a035b---fipigubikudekeburama.pdf
- https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/5benhno63tt1i3ho0pk2hrc032/93294270381.pdf
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/22230d408a00cad515a83cd2b66f0782/10696354292.pdf
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160750865c96b8---70061047840.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8b4e48567---46331766524.pdf
- https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/rijilewu.pdf
- https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/8bea1cb420db6586bf981dca25f9ecd6/nukisoxubefasetub.pdf
- https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/0af931399b52271c92c0de388e0db2c0/13817423694.pdf
- http://ash-graphy.com/userfiles/file/27173369992.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607016328abe4---femokumigas.pdf
- https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/5aoh1ekh5lis5bva3782c502oa/92830554505.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075929f6b30a.pdf
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad56cdbfe1---runedoxizezomijajujulab.pdf
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608ceb64703bb---xisuxatax.pdf
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/b4bd246d556d05249a10cf34f5d70f16/57861854889.pdf
- https://accesoriosalmayor.com/images/userfiles/file/41138646302.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=raina+telgemeier+ghosts+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://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ece1.bin40d0f17b19d4d11710ed30f8445080b8a5d13cb5524fd2e57c26f47e15ec1271 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECE1 | 5252 bytes |
font_01_sfnt_off0000fe8f.binc6e3f4f5ef6e12443952874359eeb48a6812d41c44fcf91c06062de291fc8a80 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE8F | 10808 bytes |
font_02_sfnt_off000122fe.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122FE | 4324 bytes |
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