MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The 'SE_CALLBACK_LURE' heuristic further suggests a callback phishing or tech-support scam pattern, aiming to trick users into contacting malicious actors.
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 http://noxsun.com/jingkelun/userfiles/files/20210912235247.pdf
- https://happen.webasl.com/userfiles/file/bexisadutonowonali.pdf
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161412bb9efe14---18518838440.pdf
- http://myucpb.net/userfiles/file/41805019608.pdf
- http://babijie.com/upload_fck/file/2021-9-10/20210910163633591142.pdf
- http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/16146afea2f997---44818598821.pdf
- http://www.impactit.in/ckfinder/userfiles/files/xajufowabitamidimejujiv.pdf
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614674b5d90f5---21439798606.pdf
- http://decoworld.in/dayafter/uploadimages/newsimages/file/rubidagazovafemawodaru.pdf
- https://globalybm.com/ckfinder/userfiles/files/1631760947.pdf
- http://mariautonoleggiomarsala.it/userfiles/files/gazuvumaduvul.pdf
- http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/2641920424.pdf
- http://rockhouseschool.com/rockhouse/uploads/files/xubimezopejelonefiva.pdf
- http://prestizhstroycompany.ru/SITE/files/editor/file/texubekepe.pdf
- http://omeofest.eu/userfiles/files/95540069147.pdf
- http://reedxtrainternational.com/uploads/pages/file/lujobotililujepaliruwewi.pdf
- http://architettosirocco.it/userfiles/files/80649097954.pdf
- http://dunakeszi.varosom.hu/userfiles/files/88594000573.pdf
- http://alajwakh.com/uploaded_files/userfiles/files/tiwexibogikevubomopip.pdf
- http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/f27b0877d7bc193bffa2f9b9dc846799/73670353268.pdf
- http://tahokart.ru/userfiles/file/66226336165.pdf
- http://chieucoingason.vn/files/82267697779.pdf
- https://vocembalo.ch/userfiles/file/80830130711.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=filter+your+screen+apk
- 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_off0000ba61.bin7ce035e8d0aea63eaed51e8e95a4e70c4fb1b023d358c02b96b8f06c48da0ec1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA61 | 18672 bytes |
font_01_sfnt_off0000eab9.bin12b595fe78af7183fe3667b4b0f64182758fb9ada85a1848bae9ad123d56c014 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAB9 | 10648 bytes |
font_02_sfnt_off00010343.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10343 | 16792 bytes |
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