MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The presence of numerous external URIs, many pointing to disposable hosting and exhibiting link farm characteristics, strongly suggests a phishing or malware distribution campaign. The ML classifier and ClamAV detection further corroborate the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://veterky.ru/ckfinder/userfiles/files/38380778159.pdf In PDF document text
- https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/06d15idhjebphl3nhnp52uj4hi/11766374179.pdfIn PDF document text
- https://winpoasia.com/ckfinder/userfiles/files/45665877529.pdfIn PDF document text
- http://sbriz.ru/userfiles/file/kopifafej.pdfIn PDF document text
- http://birons.net/wp-content/plugins/super-forms/uploads/php/files/484412f6d6b8a2e330ae8ba2bfbdead0/lidofesatelabusapodelin.pdfIn PDF document text
- http://mextro.de/upload/files/jiwivuvirizoj.pdfIn PDF document text
- https://amatnieks.lv/pictures/image/23486479804.pdfIn PDF document text
- http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/nujupuwedifipekeve.pdfIn PDF document text
- http://engineersclasses4competition.com/files/others/pedisepa.pdfIn PDF document text
- http://loaamtran.vn/files/usersfiles/files/wobusosexefofikimizewiwa.pdfIn PDF document text
- http://gocep.org/data/userfiles/files/4061790450.pdfIn PDF document text
- http://nanchang.chinatupai.com/web/js/ckfinder/userfiles/files/xuvurosupagesikefemitigaz.pdfIn PDF document text
- http://cdenito.net/userfiles/file/36341973799.pdfIn PDF document text
- https://mccartha-cobb.com/userfiles/files/28003752537.pdfIn PDF document text
- http://taipeitccia.org/CKEdit/upload/files/bivelen.pdfIn PDF document text
- http://diadiemvui.com/upload/files/1870070062.pdfIn PDF document text
- http://friulanamarmi.it/images/file/59056562940.pdfIn PDF document text
- http://szermgrt.hu/uploads/ckfinder/userfiles/files/wakix.pdfIn PDF document text
- http://digifast.cz/userfiles/22627359763.pdfIn PDF document text
- http://copingconversations.com/userfiles/file/kakigapitifu.pdfIn PDF document text
- http://eurekaelearning.com/upload/news/file/93078645398.pdfIn PDF document text
- http://mgocsm.in/userfiles/file/88964404239.pdfIn PDF document text
- http://elcolono.net/userfiles/files/gaxudamatemubifimu.pdfIn PDF document text
- http://hoachattn.com/image/files/12053324941.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=spouse+cheating+appsPDF 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_off0000e7c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7C4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ffd6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFD6 | 18004 bytes |
SHA-256: 014ed5fa5c11f1612f99ccf8a8be4e8877ced1b9c6c59f33f551aaa8b91a0e82 |
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font_02_sfnt_off00012d70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D70 | 10680 bytes |
SHA-256: bdb5d4bb73c2eaf917ab719b854af55c68c787c1f9d01af1c2ba11f0fd94463e |
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