PDF malware analysis — malicious · 164539d6ed2ed5e6

MALICIOUS

PDF

83.5 KB Created: 2021-09-22 21:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 5fd9c5e30a8183921b588ed346fd6b3b SHA-1: 037224b1d48a8df19ca99502d9ed10293b707659 SHA-256: 164539d6ed2ed5e6e1d2c0ced357187186b9f6262ebe26a5ca9afde1eba6d40e

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, indicating an attempt to redirect the user to malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The presence of embedded JavaScript points to its use as a delivery mechanism.

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 https://garglob.ru/uplcv?utm_term=hd+streamz+lite PDF link annotation
- https://vibangthuaphatlai.net/uploads/files/sewuxapef.pdfIn PDF document text
- https://atrax.eu/userfiles/file/najuxememef.pdfIn PDF document text
- http://nt-module.ru/ckfinder/userfiles/files/5292211973.pdfIn PDF document text
- https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/13574911273.pdfIn PDF document text
- http://kutyasturak.hu/images/files/damigelinutojimabugox.pdfIn PDF document text
- https://ww150001.linebot.net/upfile/files/20210909032507.pdfIn PDF document text
- http://mastrodibaglio.it/userfiles/files/suxevakisugunuziminabes.pdfIn PDF document text
- http://accessprecision.com/userfiles/file/66004722310.pdfIn PDF document text
- http://artepcb.com/upload/files/dobisotalulifokemok.pdfIn PDF document text
- https://greenbins.ca/ckfinder/userfiles/files/4157544227.pdfIn PDF document text
- https://gamepinleri.com/calisma2/files/uploads/totoxew.pdfIn PDF document text
- https://almudenafernandez.co/ckfinder/userfiles/Files/jujumozajatexabawot.pdfIn PDF document text
- https://angem.fr/userfiles/file/1654748656.pdfIn PDF document text
- https://podiummagazinenews.com/ckfinder/userfiles/files/ronapewe.pdfIn PDF document text
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161361ccae2f2a---40913527109.pdfIn PDF document text
- http://pomodorolennep.de/gfx/userfiles/files/44348193178.pdfIn PDF document text
- http://youandisagenix.com/ckfinder/userfiles/files/98229409763.pdfIn PDF document text
- http://azinsaghf.com/cache/fck_files/file/pevaberekokexovugikoxe.pdfIn PDF document text
- https://rumputhijau.com/contents/files/govafasomasopek.pdfIn PDF document text
- http://marketingnews.fr/images/file/xenowuzaruwaroromewo.pdfIn PDF document text
- http://eiffelflowersquesnel.com/userfiles/file/vivok.pdfIn PDF document text
- https://tour-paris-guide.com/cite_imgs/file/wifezim.pdfIn PDF document text
- http://greenearthgardens.org/userfiles/73615201593.pdfIn PDF document text
- http://mediasingrid.com/js/new/fckeditor/userfiles/file/tijugevakewirok.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_off0000dd9d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD9D	19604 bytes
SHA-256: `686194a29d675731a769d89a0727e4d5a05ea47559824a74125e045edbecf3a4`
`font_01_sfnt_off000110a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110A9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000128c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x128C0	10236 bytes
SHA-256: `5f0e7c3f23eb617cc94d5f94822da2bd682e9e9643301b612100d0c095ee6dc9`

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