PDF malware analysis — malicious · fae41b00eb46f969

MALICIOUS

PDF

70.3 KB Created: 2021-09-24 02:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: e225be647c9670cfbf3eb74289019b28 SHA-1: 52e05e12a8120717ed07c35a9de7f37b20641ec5 SHA-256: fae41b00eb46f969ce2f8df4cf9746419fb869686d2bd0c6cd2c610d8aeeb85b

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was flagged by ML classifiers and ClamAV as malicious, with critical heuristic firings indicating it is a phishing trojan. It contains embedded JavaScript and numerous external URIs, suggesting it is designed to redirect users to malicious sites. The presence of embedded JavaScript points to T1059.007, and the likely delivery method as a malicious attachment suggests T1566.001.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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
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://ibrahimkoc.com/images/Media/files/zikedubezitan.pdf In PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161480f6c2dfd2---41208874352.pdfIn PDF document text
- http://teplolux72.ru/upload/file/pegidijumelumulejigazi.pdfIn PDF document text
- https://kaimano.it/file/roropovuxazotajokulu.pdfIn PDF document text
- https://stancijanegrin.com/UserFiles/files/nuvemidat.pdfIn PDF document text
- https://escolaalfa.com/userfiles/file/fasiruxemigudamugusili.pdfIn PDF document text
- http://watdoenwevandaag.nl/upload/61697014433.pdfIn PDF document text
- http://state-lithium.com/upload/files/mununajanezifalaxutilep.pdfIn PDF document text
- https://securitydm.com/slicice/file/16028868397.pdfIn PDF document text
- https://atputasbaze.lv/images/userfiles/files/5750035197.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144ba10552df---fabixaverisalavewipeduwa.pdfIn PDF document text
- https://literie-depot.fr/UserFiles/file/mufetogo.pdfIn PDF document text
- http://nwatchonline.net/userfiles/file/gadavas.pdfIn PDF document text
- http://dpsszczytno.pl/photo/file/81299489474.pdfIn PDF document text
- https://fibra-optica.ro/ckfinder/userfiles/files/misikeromeritoru.pdfIn PDF document text
- https://mysmartedu.com/uploadimages/files/58961148281.pdfIn PDF document text
- https://weekendtripskolkata.com/userfiles/file/ronagujili.pdfIn PDF document text
- http://sakuragiramenandsushi.com/uploads/files/nawogofat.pdfIn PDF document text
- https://pastijptoto.com/contents/files/1748840284.pdfIn PDF document text
- http://matras-devison.ru/upload/file/60471789232.pdfIn PDF document text
- https://www.tulsarad.com/my_content/js/ckfinder/userfiles/files/10246976292.pdfIn PDF document text
- http://futurepoolandspa.com/ckfinder/userfiles/files/mevowimewowomedut.pdfIn PDF document text
- http://damnoen.com/ckfinder/pho/files/68117083656.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=does+this+phone+have+facetimePDF link annotation
- http://s250801404.onlinehome.fr/img/uploaded/file/rokazapuvuguguwob.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_off0000b44d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB44D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000cc64.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC64	10668 bytes
SHA-256: `db77253a2a0cc828da01464b47662a75377987e060d6b8141468b1de76fd37e8`
`font_02_sfnt_off0000e4b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4B8	15364 bytes
SHA-256: `dab344a1031cbe24a1bc522cb8baec12b9889eefc9d5b67a2b619d4cde54005e`

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