MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam pretext. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to trick the user into initiating a fraudulent phone call.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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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://oawebserver.com/piceditor/file/53664422414.pdf In PDF document text
- http://kfnmsz.com/upfolder/e/files/20210909025931.pdfIn PDF document text
- http://urgentcarepb.com/userfiles/file/dikinibepezalegowezevonud.pdfIn PDF document text
- https://spirit-legend-enterprises.com/webroot/editor-uploads/files/lunite.pdfIn PDF document text
- http://www.rajpuc.pl/pics/file/49120084975.pdfIn PDF document text
- https://pmsp-me.com/userfiles/files/98875198048.pdfIn PDF document text
- https://lescourailleurs.com/upload/editor/file/23641722675.pdfIn PDF document text
- http://www.tempshift.com/app/webroot/files/uploadimagesfile/lamumaro.pdfIn PDF document text
- https://shiprapublication.com/uniformkontakt/userfiles/image/files/tefapixogutujixubo.pdfIn PDF document text
- http://www.kymkarajok.net/tiedostot/files/dexelafazuratenaxunusaged.pdfIn PDF document text
- https://rocksoliddesigns.biz/userfiles/file/27350504905.pdfIn PDF document text
- https://weilmclainboiler.ca/fck_upload/file/17202026892.pdfIn PDF document text
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161362b0bbafc8---81411587869.pdfIn PDF document text
- http://vattucongtrinh.com/userfiles/file/tefatalugifoxefowunov.pdfIn PDF document text
- http://aan.kz/ckfinder/userfiles/files/65555894657.pdfIn PDF document text
- http://optometrystaprzemysl.pl/userfiles/file/pitiwi.pdfIn PDF document text
- https://transport.frontiermyanmar.com/sites/all/libraries/ckfinder/userfiles/files/74989153348.pdfIn PDF document text
- https://itscebu.com/upload/file/20210905002608.pdfIn PDF document text
- http://domosplast.hu/files/file/54501910634.pdfIn PDF document text
- http://citescolairedeledit.com/include/file/19753990568.pdfIn PDF document text
- https://cubic.is/userfiles/file/33748457048.pdfIn PDF document text
- https://dolmalatrek.com/userfiles/file/disomisexujaxifatiput.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=player+gr+for+androidPDF 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e364.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE364 | 23844 bytes |
SHA-256: 05b9d495afb1d7941e86667f8eef29153b3be2f669473d7a54c78ba19724fbe0 |
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font_01_sfnt_off00011e86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E86 | 10380 bytes |
SHA-256: 9c5d65a9b2ce3e531ceb056cdb808640374255b4adadad733e69a466fa86d35e |
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font_02_sfnt_off000135de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135DE | 16952 bytes |
SHA-256: 1fb01bdf2afdfe34899aec5ac2db38bc33cd7a6f12809035d67a18ff8c85fb3d |
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font_03_sfnt_off00014e71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14E71 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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