PDF malware analysis — malicious · 70e82c3f75f2613d

MALICIOUS

PDF

75.3 KB Created: 2021-07-23 01:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 59e2da5d14d4e223fb14827e865f0b37 SHA-1: 7f7acd9be8b8c154bef9ea9961db3119a544d454 SHA-256: 70e82c3f75f2613d629d6aad78b96d1b1c212ba151d0b4ac1bd4dfb53044d48b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous embedded URLs, many of which point to compromised websites or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The primary function appears to be redirecting users to potentially harmful external content.

Machine Learning

Nyx PDF Classifier malicious score 0.9973

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://clarksville.net/wysiwygfiles/file/78984882322.pdf In PDF document text
- https://miaousland.fr/ckfinder/userfiles/files/jatizeruxok.pdfIn PDF document text
- http://bensonlandscape.com/editorData/file/90407683716.pdfIn PDF document text
- https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/6vf5rnvpkv3v5sns8l9i05k06d/26411856583.pdfIn PDF document text
- http://thallo-food.hu/uploads/ckfinder/userfiles/files/koreniwiwiwed.pdfIn PDF document text
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084565c7c580---ziloxifagiwamelopijugodu.pdfIn PDF document text
- http://3dtechgroup.com/uploads/image/files/49010611034.pdfIn PDF document text
- http://tuzvedo.hu/elemek/file/jipubuxonusa.pdfIn PDF document text
- https://prairieroseclothiers.com/FCKeditor/file/57385706125.pdfIn PDF document text
- http://www.awakohchang.com/image/upload/File/azepa.pdfIn PDF document text
- https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/b25481c3ccb7a30e54ca0355d3ce6e12/wivaretugexep.pdfIn PDF document text
- http://baigeleather.com/userfiles/file/zifipadesuzopomena.pdfIn PDF document text
- http://driver-jazda.pl/upload/file/6814977215.pdfIn PDF document text
- http://platcometals.com/images/file/7846515910.pdfIn PDF document text
- http://grafichesirio.com/userfiles/files/jaragekiwetarazep.pdfIn PDF document text
- http://cualuoiskydoor.com/webroot/img/files/rikotebalulafa.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160e21d5821647---12453372686.pdfIn PDF document text
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/d892f37be7e74123b5de27b6232f7d75/31490188956.pdfIn PDF document text
- http://simonhoirup.dk/userfiles/file/85088023825.pdfIn PDF document text
- https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/a021a137337d7576c3ef27b2bd97b668/rewogivefaxoxejez.pdfIn PDF document text
- http://starinviter.com/ckimagefiles/wopamivonamovetad.pdfIn PDF document text
- http://www.niziointerior.pl/upload/file/58471620389.pdfIn PDF document text
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c884ed2d6---wopavegekovi.pdfIn PDF document text
- http://hotelbellevuepalermo.com/userfiles/files/89074198303.pdfIn PDF document text
- https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073929045aa7---3298762413.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=nitrous+oxide+in+anaesthesiaPDF 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_off0000c407.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC407	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000dc1e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC1E	10476 bytes
SHA-256: `a55bc936a90e3545c266dcd6fa0ad2cd430715461d2f987d2e3063913703fcd6`
`font_02_sfnt_off0000f3e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3E5	16672 bytes
SHA-256: `edc428f1783522a7165891c03fbf7836672b47fb765e7f0d4b4c91b43d7322fc`

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