PDF malware analysis — malicious · e245f21f77a8e7cc

MALICIOUS

PDF

81.2 KB Created: 2021-09-15 19:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: b9daa7c7656cd574b4f7547fa9351422 SHA-1: bfb53ce8651fa9a40bc561ca64a3769664f4fc7d SHA-256: e245f21f77a8e7cc75b84b81c2b3723d2b29ee8fa5ea0ebddeb65f1adff6b034

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, with one heuristic specifically identifying it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malicious content. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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 http://fizjoactiv.eu/Upload/file/pesoposukoka.pdf In PDF document text
- https://easypayindia.in/userfiles/file/wuzazigake.pdfIn PDF document text
- http://arcdesantmarti.com/biocop/Images/images-editor/file/vakexarigikiregu.pdfIn PDF document text
- http://wcsps.com.tw/ckfinder/userfiles/files/53067987589.pdfIn PDF document text
- http://autoscuolavalerio.it/userfiles/files/lojene.pdfIn PDF document text
- https://best-of-geldanlagen.de/userfiles/file/ranasanerexar.pdfIn PDF document text
- http://kleinschadenexperte.de/userfiles/file/zevusule.pdfIn PDF document text
- http://fratellilongoni.com/userfiles/files/waxaniwomasev.pdfIn PDF document text
- http://mbjarrahi.com/UploadedFiles/New/file/tulikanavowovulijo.pdfIn PDF document text
- https://acryl-bg.com/userfiles/file/63940416797.pdfIn PDF document text
- http://pallenberg-busreisen.de/uploads/files/movavixiwavapav.pdfIn PDF document text
- http://w-mill.jp/images/file/terufujumejiwaz.pdfIn PDF document text
- https://clubesolbra.com/uploads/files/luwalilizozelilarivukomin.pdfIn PDF document text
- http://naphogacomposite.com/upload/files/53080707092.pdfIn PDF document text
- http://1carl.com/userfiles/file/pufekuzemomovoxe.pdfIn PDF document text
- http://thekreativecompany.com/uploaded_files/userfiles/files/wivewifigepagovijemo.pdfIn PDF document text
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/de488d2e49c2e79562d272c8306cdb42/bulasafibawuwiposusafe.pdfIn PDF document text
- http://songhakbbq.com/uploads/files/36762958883.pdfIn PDF document text
- http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/161347edb8cca1---rerusaxadofopenegi.pdfIn PDF document text
- https://deycaterers.com/ckfinder/userfiles/files/33265221178.pdfIn PDF document text
- https://noble-program.site/js/ckfinder/userfiles/files/pujowokalefebibososibul.pdfIn PDF document text
- http://www.santabriganti.org/admin/ckfinder/userfiles/files/soletazove.pdfIn PDF document text
- http://edukoc.net/userData/ebizro_board/file/tewapadezu.pdfIn PDF document text
- http://euskararenginkana.eus/files/galeria/files/sigemonajefoliv.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=best+iron+man+wallpaper+for+androidPDF 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_off0000d95a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD95A	17052 bytes
SHA-256: `20c45d94c88786c8ccfa91125a8e9285ea4315437bb327c8eae961e5f2be9d6f`
`font_01_sfnt_off000105ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x105AB	10796 bytes
SHA-256: `233806edd7276b582622519dfb752dc4d6fcfc0907e95102b99df30d8216a322`
`font_02_sfnt_off00011e9d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11E9D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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