PDF malware analysis — malicious · 58872502f5bda6df

MALICIOUS

PDF

85.8 KB Created: 2021-09-13 13:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 774b8c7c8414d0b4e0fc8f5ed2f9a085 SHA-1: c86ab9b5ea31c71086dbaaf874f0e2fafc1d93c6 SHA-256: 58872502f5bda6df68f33cb297c50b448d559ac2fc863870a0e9fb31b2ea9c63

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. The ML classifier and ClamAV detection strongly indicate malicious intent. The sample also exhibits characteristics of a link farm, with numerous external URIs pointing to potentially malicious or phishing content, suggesting a role in distributing further malware or leading users to fraudulent sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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 https://www.ijdsir.com/ckfinder/userfiles/files/78477473084.pdf In PDF document text
- http://dailygameresult.com/editor/UserFiles2/files/mobazova.pdfIn PDF document text
- http://qunjl.com/userfiles/files/jatapovipajutedakalovez.pdfIn PDF document text
- https://kebecelectrique.com/upload/editor/file/30237607876.pdfIn PDF document text
- http://ibsdhc.hpds.work/ecdemo/web/js/ckfinder/files/files/53805598045.pdfIn PDF document text
- http://nenayu.com/filespath/files/20210903041346.pdfIn PDF document text
- https://hamasataccessories.com/userfiles/files/jakezubewazomulanetokof.pdfIn PDF document text
- https://appchecar.com/ckfinder/userfiles/files/859633030.pdfIn PDF document text
- http://rigosarchitects.gr/userfiles/file/tasafowad.pdfIn PDF document text
- http://a-mega.ua/images/uploads/file/wubopabidofitamutowoni.pdfIn PDF document text
- http://timebymtm.com/upload/files/resemawibadagoged.pdfIn PDF document text
- http://aqs-group.it/userfiles/files/mojojakaluluvavo.pdfIn PDF document text
- https://paulogomeslda.com/userfiles/file/dejepimixamudiripopefut.pdfIn PDF document text
- http://banglenhospital.com/UserFiles/File/66676229495.pdfIn PDF document text
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7d1675cfe---76667049093.pdfIn PDF document text
- https://mygenius.ru/admin/ckfinder/userfiles/files/74121023784.pdfIn PDF document text
- http://phutungquanghieu.com/app/webroot/files/ckfinder/files/kezoxaraporodusegajo.pdfIn PDF document text
- http://managhantasala.net/mailuserfiles/file/14754741686.pdfIn PDF document text
- https://marikakozmetika.hu/editor_up/tovirobowoz.pdfIn PDF document text
- http://fc-junajted.com/upload/datoteke/1989861605.pdfIn PDF document text
- https://llbyggodesign.se/UserFiles/files/donojezatip.pdfIn PDF document text
- https://filetorme.com/upload/files/mafiwekojadi.pdfIn PDF document text
- http://mitchelllawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/58048970554.pdfIn PDF document text
- http://fuhua.tumujike.com/assets/upload/files/202109051208378078.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+connect+pc+with+android+phonePDF 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_off0000eb45.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB45	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001035c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1035C	10472 bytes
SHA-256: `559df23a988e619ac46cb755a754b488cf53e1ff5db40a51067a172aa90821c5`
`font_02_sfnt_off00011b0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B0A	17620 bytes
SHA-256: `ab08f9383b67d27c4ba68ffd76333a9e7e7b02c9a5ed01a74d3129c5526ec2d2`

Open this report in the interactive analyzer, or submit your own file for analysis.