MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to numerous distinct domains, many of which are hosted on disposable infrastructure. This pattern suggests an attempt to distribute malicious content or phish for credentials through a network of redirecting URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://avvolodin.ru/upload/file/59810815222.pdf In PDF document text
- https://wojczak.pl/userfiles/file/91352670173.pdfIn PDF document text
- http://vvk-wiedermann.at/userfiles/file/89143759185.pdfIn PDF document text
- http://chiangmaicharmingtravel.com/ckfinder/userfiles/files/wofubumabamojufigu.pdfIn PDF document text
- http://tecksco.com/upload/files/jevubibutus.pdfIn PDF document text
- https://sanruouvang.net/images/uploaded/file/35505950556.pdfIn PDF document text
- https://anitacalderon.com/ckfinder/userfiles/files/96465392900.pdfIn PDF document text
- http://vallovin.it/userfiles/files/rafatonorubok.pdfIn PDF document text
- http://chickendaylacrescenta.com/uploads/files/gixefidugoriposepogo.pdfIn PDF document text
- http://meyanko.com/userfiles/file///laxavizajavuw.pdfIn PDF document text
- http://wajl.net/img/file/2021914175927.pdfIn PDF document text
- https://skillmapmagazine.com/ckfinder/userfiles/files/78105280816.pdfIn PDF document text
- http://tunapvietnam.thietbiotoviet.com/Images_upload/files/tumewawegopope.pdfIn PDF document text
- http://vincitydata.com/uploads/ckfinder/files/vavuvabadeviroke.pdfIn PDF document text
- https://www.kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/76374160737.pdfIn PDF document text
- https://derya.afmiletisimajansi.info/resimler/files/zipolimupakenup.pdfIn PDF document text
- https://2-view.org/home/view/public_html/ckfinder/userfiles/files/84005536340.pdfIn PDF document text
- http://ipceurope.com/assets/file/39936289690.pdfIn PDF document text
- https://mlbcsimleague.com/ckfinder/userfiles/files/simusikukebufavedulagino.pdfIn PDF document text
- https://unovosti.tv/ckfinder/userfiles/files/53747939412.pdfIn PDF document text
- http://www.trisad.kz/ckfinder/userfiles/files/59313388392.pdfIn PDF document text
- https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/b7d0d0b70da6525017608b21dddbbaab/10246850507.pdfIn PDF document text
- http://mrtowing.ca/Lawyers/userfiles/file/wowisalaroligidenim.pdfIn PDF document text
- https://www.suep.gr/ckfinder/userfiles/files/zagiwa.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=common+language+in+chinaPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d4b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4B1 | 21696 bytes |
SHA-256: 3424d35608d2784bad2cee165d52e043f72170a02eda5100d94078406e7c6035 |
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font_01_sfnt_off00010dd5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DD5 | 10444 bytes |
SHA-256: 525372d8a0f10889523d1843381ca54f97f2bbd991314890d019d2f8ece0763e |
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font_02_sfnt_off00012546.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12546 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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