MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of links, many of which point to compromised WordPress sites and are hosted on disposable domains, indicating a link farm designed to distribute malicious content. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of numerous unknown URLs suggests a broad distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 6
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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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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://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077254c9bb78---83632724675.pdf
- http://acmemask.com/upfiles/editor/files/tozivoxonumeredavetab.pdf
- http://sun-green.nl/ckfinder/userfiles/files/gukelazumapinejut.pdf
- https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/u99cs7petr3ufcp435fd07vof0/vijigugilavegefamakom.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160c697ba6aa06---4387931547.pdf
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4d1bd023b---lugesudadamafekisa.pdf
- https://sport-jicin.cz/dokumenty/7329074311.pdf
- http://good163.cn/Uploadfiles/files/lakus.pdf
- http://andreaslasnik.com/data/files/tajigurezadoti.pdf
- https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/qp8hi5djf9rl7r1l7bt72ptvmg/sanezomitawipebazaliwexo.pdf
- http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/8655bbbead0ae9ce9d524f2b6443cfd3/wiwutup.pdf
- http://candientushinko.com/images/file/lolapetazavolosijelazog.pdf
- https://tecnibat.net/uploads/archivos/jafenofimeduwimabeko.pdf
- https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/31a1627caf7b19f5c1771d9199da18f2/lirutuwoje.pdf
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb85d0cc38---logunuxofonuzup.pdf
- http://praxis-greve-polley.de/web/editor/files/79240288909.pdf
- http://teknis.it/userfiles/files/58634423640.pdf
- https://jmcoverseaspvtltd.com/uploads/files/57580626013.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ca1dc446a53---fafamapuwofi.pdf
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1608571d17213d---gefetidixixibaloto.pdf
- https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/er0tslctb2iam79jr1a116l1ti/89469668117.pdf
- http://www.hgbehringer.de/img/files/files/ferozap.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=primary+solutions+chemistry
- 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_off0000dfcd.bin35d0221b174ca635cf88ca0d6fb7fe85cb959c04fba451b1995ca1a4708ad723 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFCD | 10708 bytes |
font_01_sfnt_off0000f83a.bind5f69958510c48c3a6e644389e2fad1f4b48620008040ec61ae6a230cf502256 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF83A | 17504 bytes |
font_02_sfnt_off00012655.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12655 | 16792 bytes |
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