PDF malware analysis — malicious · 6095992a6d01602a

MALICIOUS

PDF

97.6 KB Created: 2021-09-19 03:35:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 48a7a35ffbc9736eb223c6f27007d65a SHA-1: 6630cfdd91e51bfb3df4049a81d1ecedeee8fe05 SHA-256: 6095992a6d01602a4aa16857307a9ced41f4c0761aa6a66d87dab11c1126ddf5

164 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9942

Heuristics 7

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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://synerhu.ru/uplcv?utm_term=the+tomorrow+war+layarkaca21 PDF link annotation
- http://15449010.com/FileData/ckfinder/files/20210910_BD6ADD7EB82723B4.pdfIn PDF document text
- http://studiopol.it/userfiles/files/27225276626.pdfIn PDF document text
- http://ghettaetamionarchitetti.it/userfiles/files/butetovimamas.pdfIn PDF document text
- https://highfieldhousehotel.net/nbloom/fckuploads/file/gufilipijosil.pdfIn PDF document text
- https://luminex.pl/upload/file/sakuxirizutoradazozanena.pdfIn PDF document text
- http://forspeed.cz/ckfinder/userfiles/files/fakijanaduraje.pdfIn PDF document text
- https://emtracing.net/userfiles/file/29990661465.pdfIn PDF document text
- http://hkalc.com/userfiles/97626102267.pdfIn PDF document text
- https://onlineadda.net/ckfinder/userfiles/files/91205188814.pdfIn PDF document text
- https://ataru.site/js/ckfinder/userfiles/files/lakulawuxifadul.pdfIn PDF document text
- http://autosklo.sk/pictures/file/petoxozebugolunogubuvajub.pdfIn PDF document text
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139fd4255bbf---17336478219.pdfIn PDF document text
- https://asiastudy.in/ckfinder/userfiles/files/32607001273.pdfIn PDF document text
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/161403bbb45f57---butabavuvoxebumupapagax.pdfIn PDF document text
- http://nofatrans-int.com/userfiles/file/9144844640.pdfIn PDF document text
- https://forumsevens.com/images/file/wezakobakisutunilelen.pdfIn PDF document text
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16135178c87615---30824714537.pdfIn PDF document text
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9c4e1d8cf---fabod.pdfIn PDF document text
- https://mbp.hastatis.com/mbp/upload/images/images/upload/ckfinder/62902545387.pdfIn PDF document text
- https://listapp.in/ci/userfiles/files/24315683617.pdfIn PDF document text
- http://dfanchem.com/upload/files/mubiz.pdfIn PDF document text
- https://castilloexterior.es/ckfinder/userfiles/files/newokebasakoz.pdfIn PDF document text
- http://coachhouse.info/assets/file/faladosunugirapisu.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_off00011724.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11724	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00012f3b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F3B	10556 bytes
SHA-256: `0e9e07c44e1024a339a4f316b392aecfc7594db26c8c7543b06644852e442eb9`
`font_02_sfnt_off00014788.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14788	19008 bytes
SHA-256: `415b046173f642162ffd26c2edf42e114d6751e5235e1d46e72df8e4c93255a6`

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