PDF malware analysis — malicious · f9dcbbeb1fb412eb

MALICIOUS

PDF

70.3 KB Created: 2021-09-26 06:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 06a11cb6944ca2da62b04112b169d78b SHA-1: 5e862a95f4233cde636c247a2bdb8e16c35b1ae5 SHA-256: f9dcbbeb1fb412eb579c6977c8abbe1d5bd89091d0f5284787744b14c69831b9

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and multiple external URIs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading malware disguised as legitimate software. The embedded JavaScript is likely responsible for redirecting the user to one of the malicious URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9956

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://pixomot.ru/uplcv?utm_term=chromecast+download+for+laptop PDF link annotation
- http://biemmecommerciale.eu/userfiles/files/xosonineto.pdfIn PDF document text
- https://blagoustroystvo24.ru/ckfinder/userfiles/files/60855417448.pdfIn PDF document text
- http://tgroupsrl.com/userfiles/files/40974963282.pdfIn PDF document text
- https://vietcuongcorp.com/uploads/news/files/rojiwigox.pdfIn PDF document text
- http://stihoplet.by/upload/editor/files/92403610229.pdfIn PDF document text
- https://turismo-galicia.es/ckfinder/userfiles/files/rabenotavabevebivodevupi.pdfIn PDF document text
- https://fceresources.com/ckfinder/userfiles/files/zalejasikiluzulimipile.pdfIn PDF document text
- http://www.colormotion.cz/UserFiles/file/56281912655.pdfIn PDF document text
- http://latiendasegura.com/contable_prueba/userfiles/file/libaxodosedoremituwulo.pdfIn PDF document text
- http://meubelenindex.nl/images/uploads/41710339481.pdfIn PDF document text
- https://www.marjojaspers.nl/ckfinder/userfiles/files/84613172222.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614fd4e64280a---59281990151.pdfIn PDF document text
- https://samsunyapi.com/userfiles/files/buloxasujigojibamazufu.pdfIn PDF document text
- https://coolingrealestate.com/your-home-cleaner/FCKuploads/file/91905758875.pdfIn PDF document text
- https://greenlakecruises.com/ckfinder/userfiles/files/fizasog.pdfIn PDF document text
- http://dharmapuridiocese.com/svnprojects/DHD/Source/images/files/75428164631.pdfIn PDF document text
- http://lexus-custom.com/js/upload/files/barikakuminanofuze.pdfIn PDF document text
- http://www.mezmat.ru/ckfinder/userfiles/files/42837291582.pdfIn PDF document text
- http://wowbond.com/upload/Fckeditor/file/nilenesiratuzalimubiwidu.pdfIn PDF document text
- https://ms01bet.com/contents/files/48776561205.pdfIn PDF document text
- https://inprovitcolombia.com/ckfinder/userfiles/files/fuwinowagotiz.pdfIn PDF document text
- https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/powusufosipifusi.pdfIn PDF document text
- https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/83499925117.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_off0000afb4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAFB4	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000c7cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC7CB	10912 bytes
SHA-256: `4cafc8aedb0417fe507fb7a03a8054ee52dfca33f124d47ef776ac34a2d2568c`
`font_02_sfnt_off0000e0fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0FD	16688 bytes
SHA-256: `1ad7d8a97e7f949f0726d1ebe2147956f3c3a7bdb15b0535259eb1bd207ac921`

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