PDF malware analysis — malicious · 92cc2d2cc465e408

MALICIOUS

PDF

98.0 KB Created: 2021-08-15 02:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 119f327361888458144810fcc0548e48 SHA-1: 2dbc653f7b531a1f5ae0ea06b91a382e8de9708e SHA-256: 92cc2d2cc465e40832c323f8487b01cfb33d362b878e5b5099b97e03baf8284d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many of which point to compromised WordPress upload directories or are hosted on disposable domains, suggesting a link farm designed to distribute malicious content or phish users. The file's structure and the nature of the URLs indicate it is likely part of a phishing campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9890

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
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.
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://colantuono.it/userfiles/files/96977134025.pdf In PDF document text
- https://onhimalayas.com/ckfinder/userfiles/files/25069050043.pdfIn PDF document text
- https://olympicwroclaw.pl/zdjecia/fck/file/fuwamup.pdfIn PDF document text
- http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d2e7a5fd7---gaxanemogafebelujederufi.pdfIn PDF document text
- https://leuphuotcamap.com/uploads/image/files/sovimulitoto.pdfIn PDF document text
- http://jinshi66.com/uploadfiles/files/lokoropesudikitak.pdfIn PDF document text
- https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/653675463621a98d80245ead8bda4b16/26004013301.pdfIn PDF document text
- http://akademia-jedenastka.pl/zdjecia/fck/file/6523349916.pdfIn PDF document text
- http://alompar.hu/uploads/content_files/files/76913619421.pdfIn PDF document text
- http://propellerclubsandiego.org/uploads/files/23280162461.pdfIn PDF document text
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e1e79dfafc---lavene.pdfIn PDF document text
- https://www.espaciocultivarte.com/ckfinder/userfiles/files/51882111685.pdfIn PDF document text
- http://www.aamuhsv-madisonalumni.org/files/files/7808913432.pdfIn PDF document text
- http://myucmas.com/userfiles/file/funepotusebisojisab.pdfIn PDF document text
- https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/or2sp1rqsqm2lh7jbqhsgs3usp/fuxusugudinej.pdfIn PDF document text
- http://escrima-rlp.de/userfiles/file/negedeninebijatepo.pdfIn PDF document text
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160917dc4a7db1---58680228361.pdfIn PDF document text
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609175d3f1ca9---sewuxeta.pdfIn PDF document text
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f21f779cb6---8150476018.pdfIn PDF document text
- https://nepalipublisher.com/ckfinder/userfiles/files/repabuxepogoxunomosinex.pdfIn PDF document text
- http://aldara-latinoamerica.com/userfiles/file/19344118938.pdfIn PDF document text
- http://coming-c.com/userfiles/file/86388999499.pdfIn PDF document text
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c78095b9e3e---zomulone.pdfIn PDF document text
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160923ed0a65e2---mejusadabudepovibita.pdfIn PDF document text
- http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160980eaa7d6d1---22241655431.pdfIn PDF document text
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/c6795c3e9be605fe5e8aa5c8f0477118/27562669863.pdfIn PDF document text
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820e84750f7---53681189134.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=lia+sophia+catalog+2012PDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000101ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101EA	10568 bytes
SHA-256: `bee20242e5df5214f3a3d890f75eb71ddf8c647fdd2243b5b00535f42c9786d2`
`font_01_sfnt_off00011a47.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A47	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00013259.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13259	18444 bytes
SHA-256: `5eb89d5f5da0da9340a70f6ca7e6e983cc37d7ea0087528a3e7433340d96c773`
`font_03_sfnt_off000162dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x162DD	16312 bytes
SHA-256: `7d15b2d6d265aaca51dda18faee70a1b8fa9d95ed54cb111fb0895789092f9ae`

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