PDF malware analysis — malicious · e29b87e3b5924e9f

MALICIOUS

PDF

68.8 KB Created: 2021-09-23 09:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 70f76f03434fb12b7e0049cce1b889cf SHA-1: 3b8a5f08640fa00a63a0ed46f7a3e1848bb66d6a SHA-256: e29b87e3b5924e9f2bc62881a93ce7d367074a7cde678660d4bca98aadf2420c

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The PDF_IMAGE_LURE heuristic indicates it's an image-only document designed to trick users into clicking an embedded action trigger. The numerous external URIs, many hosted on disposable domains, suggest a link farm used for distributing malicious content or directing users to phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE

PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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.
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://infrive.ru/uplcv?utm_term=download+cinema+on+smart+tv PDF link annotation
- http://pattarasawat.com/ckfinder/userfiles/files/93476559109.pdfIn PDF document text
- http://jdjcnc.com/upfolder/e/files/20210902102554.pdfIn PDF document text
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/4bbf419d376dfa7a8ab484fc6f89bf3f/59754300169.pdfIn PDF document text
- http://blackivy.pl/userfiles/file/53424896755.pdfIn PDF document text
- https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/71fd93a417597a1c160d69f95a6ac404/36059332563.pdfIn PDF document text
- http://chothuexeninhbinh.net/data/dulieu/files/87851640709.pdfIn PDF document text
- http://powercleanperu.com/cms_powerclean_2015/sgi_userfiles/userfiles/files/59499539278.pdfIn PDF document text
- http://ageddfjtjgrade.pretty-match.com/upload/files/fivadovibekediwofiboxiriw.pdfIn PDF document text
- http://biomehl.com/images/content/files/noderezupodejevululovo.pdfIn PDF document text
- https://andreivieru.com/ckfinder/userfiles/files/89548235553.pdfIn PDF document text
- https://madeinstlucia.com/userfiles/files/dibosujufomoru.pdfIn PDF document text
- http://cisseo.net/userfiles/files/96370287663.pdfIn PDF document text
- https://nic-irq.com/userfiles/files/40168151274.pdfIn PDF document text
- http://artwatch.ru/userfiles/file/vedunapafe.pdfIn PDF document text
- http://domplus.su/userfiles/files/rujidekiriguzujemozag.pdfIn PDF document text
- https://www.igescanada.com/ckfinder/userfiles/files/93645818946.pdfIn PDF document text
- http://bc-arman.kz/ckfinder/userfiles/files/sigalixivemof.pdfIn PDF document text
- https://ibrahimkoc.com/images/Media/files/37561805348.pdfIn PDF document text
- https://ismart99.net/upload/files/57529819681.pdfIn PDF document text
- https://brakos.it/file/disajadelovomaraxij.pdfIn PDF document text
- http://cpviettin.com/upload/files/21808611804.pdfIn PDF document text
- http://wdnederland.nl/file/53869572253.pdfIn PDF document text
- http://beverly.kopanramen.com/uploads/files/firoto.pdfIn PDF document text
- http://top-caster.com/userfiles/file/24217679512.pdfIn PDF document text
- 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_off0000b1ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB1EA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ca01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA01	10684 bytes
SHA-256: `e34c427138dcf03903c42ff8634f2f9df4d634fe1b48b95795bd6dfa629a87e1`
`font_02_sfnt_off0000e285.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE285	14148 bytes
SHA-256: `3e69d76abcd7e3470fe8a2ab87105e522a250ae00b70926891f2239f377e210a`

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