PDF malware analysis — malicious · 4a1e3be3e2b44c4a

MALICIOUS

PDF

84.6 KB Created: 2021-07-22 04:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: 7cc11d168c1f751d8e891fcfa3737d41 SHA-1: 127bd4cea51fe53bf421fe945d6a85131e188803 SHA-256: 4a1e3be3e2b44c4ad71e6a7516b2203fd0357f65219864425e582998e5d5be4c

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document's structure and embedded URLs suggest it is part of a link farm designed to redirect users to phishing sites. The 'SE_MFA_LURE' heuristic specifically indicates the document aims to harvest credentials or abuse multi-factor authentication, likely by presenting a fake login or verification prompt to the user.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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 https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160836e1c54953---janebanebi.pdf In PDF document text
- http://rivieahk.com/clients/5/51/51325344bd1517f257d6959d5350918e/File/58145165011.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aef2f0c4646---kisuwokefemujoderidodobob.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609561b5ce4db---titovewawogexezevixutes.pdfIn PDF document text
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/e87d9ce5e1e9d7a3a147d192506f3bef/mozevanogulijunora.pdfIn PDF document text
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a13345458a1---kevifixij.pdfIn PDF document text
- https://teenvolunteerhouston.com/wp-content/plugins/super-forms/uploads/php/files/6047c459a32f10c10ffccb34b0b7ce61/tibewunilokexegelufepe.pdfIn PDF document text
- https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/ba8511b47cb669a18b450589f44e3b8b/88487465190.pdfIn PDF document text
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160a07b788fff7---fobevavubudoteti.pdfIn PDF document text
- https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/gfldkpe5jftf8sj0lg8sfi8bqc/bafojobes.pdfIn PDF document text
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160de638b0aa35---gisexederozu.pdfIn PDF document text
- https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/576r56hm86ti6m5ldo2mf444to/sajot.pdfIn PDF document text
- http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1eb1fa6c75---27155988311.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160d8a8be561e0---8263508818.pdfIn PDF document text
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ffe789660a---gogavuxufudoviwizaferi.pdfIn PDF document text
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6560b1dfa7---jetodasiloramanek.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160e7a75733dc6---68823908638.pdfIn PDF document text
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c6b72430881---20924235437.pdfIn PDF document text
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca3de1d60f---10373673440.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d111e6031---xetanasimadepixema.pdfIn PDF document text
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f173fc471e---60206543109.pdfIn PDF document text
- https://n-zvuk.ru/upload/file/58761280492.pdfIn PDF document text
- https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/47grhuj1bbl6on3rd6r5kn3cd1/12157363683.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/d366119c4194028eb9a33bda60f6582b/20431635055.pdfIn PDF document text
- http://szpk.hu/_user/file/44746492227.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=free+download+for+pdfPDF 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_off0000e80b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE80B	17912 bytes
SHA-256: `a88915a7dd107d8a608d62ffe070808a13e2fae257f9c301bbb7ca5b0685db7d`
`font_01_sfnt_off00011607.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11607	10196 bytes
SHA-256: `c64427ff0c1d7967f18e9d39b1d647c31e5bf117a3a7226adcaa2b62c812c7cd`
`font_02_sfnt_off00012d02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D02	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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