MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The sample was flagged by ML classifiers and ClamAV as malicious, with specific heuristics indicating it functions as a callback phishing lure. The document body is heavily obfuscated, preventing a detailed analysis of its content, but the presence of numerous URLs and the 'SE_CALLBACK_LURE' heuristic strongly suggest a social engineering attempt to trick the user into initiating contact via phone. The primary attack vector is likely spearphishing attachment, leading to user execution of a malicious link.
Machine Learning
- Nyx PDF Classifier malicious score 0.9820
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://rutka.pl/media/upload/files/8f6ca1d733458099b173df8589252db8.pdf In PDF document text
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131774cce985---64179978397.pdfIn PDF document text
- http://ccshecea.org/upload/files/rolezuwutoxotivir.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/rubupudimi.pdfIn PDF document text
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613506c68d4fc---raxepulobibozidavop.pdfIn PDF document text
- https://mauspro.net/upload/files/goxumufenomogipasali.pdfIn PDF document text
- http://vuoncotichdep.com/upload/files/66595604894.pdfIn PDF document text
- http://saltokisport.com/uploads/files/tawilafonojapeberefe.pdfIn PDF document text
- http://interstroy96.ru/uploads/files/16945589820.pdfIn PDF document text
- http://stellarvvv.ru/ckfinder/userfiles/files/wixaxofumijev.pdfIn PDF document text
- http://cnsgawefgl.netsociality.com/upload/files/72913487763.pdfIn PDF document text
- http://kssi.ir/public/userfiles/file/23522675564.pdfIn PDF document text
- https://www.chablis-gautherin.com/ckfinder/userfiles/files/punasixivipaso.pdfIn PDF document text
- https://bvphcn.bdata.vn/upload/files/kumijubeda.pdfIn PDF document text
- https://posaonakosovu.com/ckfinder/userfiles/files/39619046102.pdfIn PDF document text
- http://kbautotech.com/board/datafiles/imagefile/85354090861.pdfIn PDF document text
- https://himalayanwanderer.com/himalayan/userfiles/files/dawurolegupax.pdfIn PDF document text
- http://turinhotelcompany.com/userfiles/files/zitegelogi.pdfIn PDF document text
- http://commandhousecreations.com/uploads/files/42251738544.pdfIn PDF document text
- http://huabulaw.com/uploadpic/2021-9/file/2021091122055273499.pdfIn PDF document text
- https://benmoonpharma.com/userfiles/file/29763658965.pdfIn PDF document text
- https://holcom-wd.holcom.vn/webroot/img/files/48250832213.pdfIn PDF document text
- http://coachhouse.info/assets/file/31036216559.pdfIn PDF document text
- https://superpart.com/files/nigovedugipazakewazakanil.pdfIn PDF document text
- http://ylpqzl.com/ckfinder/userfiles/files/24095738840.pdfIn PDF document text
- http://eaupureinternational.com/userfiles/file/sexodemimeziduna.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=kodi+update+2020+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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f677.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF677 | 18108 bytes |
SHA-256: c40b98e8e51b9945c24063a70e8c0f9303bab8d71d7c6236beca4c6da83d855a |
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font_01_sfnt_off000124c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x124C8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013cdf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CDF | 10504 bytes |
SHA-256: e77ef5b1413b0be09475e2293706d4b7b3421b414fb2298559d50aa04f6f19bb |
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