PDF malware analysis — malicious · cc2be86bdef4290c

MALICIOUS

PDF

82.8 KB Created: 2021-09-10 08:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: e8bead5e47b46e79e766fdaa3256581a SHA-1: 5e20ffcd09fbf820dfd330afa309d052c7fb7d33 SHA-256: cc2be86bdef4290c99ea5b4d139f2c2d25c88547375a513586037bcc6f716ea8

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample is a PDF document identified as malicious by ML classifiers and ClamAV. It contains embedded JavaScript and a large number of external URIs, many of which point to disposable or unknown hosts, indicating a phishing or malware distribution attempt. The embedded JavaScript likely serves to further the malicious intent by either redirecting the user or downloading additional payloads.

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 http://autosklo.sk/pictures/file/99186732351.pdf In PDF document text
- http://lahma.pl/_u/userfiles/file/dedidodezef.pdfIn PDF document text
- https://zhavezbozi.cz/data/file/13628987342.pdfIn PDF document text
- https://fcr-fomentoconsumoerenda.com/uploads/files/sexipi.pdfIn PDF document text
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130f8b749293---gofabepomafeguz.pdfIn PDF document text
- http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16137199957ae0---zowufajogugoz.pdfIn PDF document text
- https://kohphanganhotelandtour.com/userfiles/file/majuvewola.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/fenowirawufiferepogalif.pdfIn PDF document text
- http://akademia-jedenastka.pl/zdjecia/fck/file/zukineribiwujus.pdfIn PDF document text
- http://volker-issmer.de/userfiles/file/98543834963.pdfIn PDF document text
- http://ventss.ru/userfiles/files/gulaguz.pdfIn PDF document text
- http://108shiva.com/userfiles/file/In PDF document text
- https://banerjeetourspecial.in/ckfinder/userfiles/files/80116551751.pdfIn PDF document text
- https://wojczak.pl/userfiles/file/55432336782.pdfIn PDF document text
- http://madveras.com/ckfinder/userfiles/files/53372004854.pdfIn PDF document text
- https://wojczak.pl/userfiles/file/kipivinekarofewutil.pdfIn PDF document text
- http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/pazawubivuwamiputo.pdfIn PDF document text
- https://lalicorne-hotel.com/userfiles/file/6224782888.pdfIn PDF document text
- http://www.teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/12917205073.pdfIn PDF document text
- https://alarouba.com/ckfinder/userfiles/files/pogemaluzajoz.pdfIn PDF document text
- http://caytrong.vn/Images_upload/files/3498395647.pdfIn PDF document text
- https://nvsrolko.org/ckfinder/userfiles/files/jilakubirepigajudomoti.pdfIn PDF document text
- http://www.park-seversk.ru/other/js/ckfinder/userfiles/files/94386834575.pdfIn PDF document text
- https://vico-real-estate.com/ckfinder/userfiles/files/xoxep.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=rainway+android+tvPDF 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_off0000e18d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE18D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f99f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF99F	17292 bytes
SHA-256: `e67036d3d3e3e751c85f67f28c5543f01fb3e5936c5bab4fd054e65400a78d2e`
`font_02_sfnt_off0001266c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1266C	10204 bytes
SHA-256: `8a42a713d12707ab7d0b90d2f06768869341085c144baba208b5dfbafa4b2263`

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