Malicious PDF — malware analysis report

Static analysis result for SHA-256 3482df60bb2a05e1…

MALICIOUS

PDF

83.3 KB Created: 2021-09-10 05:34:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a00b62a3c26715f883f0663f3c5a87df SHA-1: 32d4e177553ed60da237fecab6215ed9a7dde1cc SHA-256: 3482df60bb2a05e1f176f414fe226501e11f365f26fad58166e9bbe0dbbd1a1f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to distinct domains and appear to be part of a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates that the PDF is designed to host multiple links on disposable hosting. ClamAV detection and ML classification strongly suggest malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • 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.
  • 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://6nergy.fr/6nergy/sites/default/user/file/wivufopogazewibidukokudex.pdf In PDF document text
    • https://allcondosales.rodeodrivecondosale.com/userfiles/files/40942550940.pdfIn PDF document text
    • http://sujitonweb.com/userfiles/files/96406521124.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/92046600606.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/files/95075956513.pdfIn PDF document text
    • http://capitaldanceacademy.com/userfiles/files/39233605400.pdfIn PDF document text
    • https://china-glass-mosaic.vegner.com/userfiles/files/20210905_191917.pdfIn PDF document text
    • https://drivetripper.com/userfiles2020/files/totifopazum.pdfIn PDF document text
    • http://thegoshow.net/userfiles/file/gebisusop.pdfIn PDF document text
    • http://oroblupiscine.it/userfiles/files/riketaluxotulebeva.pdfIn PDF document text
    • https://bisnismedsos.com/userfiles/file/76765768596.pdfIn PDF document text
    • http://metalzilembo.it/userfiles/files/22151248332.pdfIn PDF document text
    • https://elegune.net/files/galeria/files/kiborilukevinudinugeroze.pdfIn PDF document text
    • http://naphotelbangkok.com/userfiles/files/wivelorujuvamekuwosisiw.pdfIn PDF document text
    • http://hopkim.vn/upload/files/14137806134.pdfIn PDF document text
    • http://agilesolutions.in/uploads/vavowepam.pdfIn PDF document text
    • http://kemenyseprosiklos.hu/upload/file/fedelezonujabakilobu.pdfIn PDF document text
    • http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/fekalobuda.pdfIn PDF document text
    • http://farmaciafoglia.eu/userfiles/files/62373566903.pdfIn PDF document text
    • http://pattarasawat.com/ckfinder/userfiles/files/41082643430.pdfIn PDF document text
    • http://bakoca.hu/files/file/xamotilojixon.pdfIn PDF document text
    • http://unityproductions.com/upload/files/26542700513.pdfIn PDF document text
    • http://pooq-design.com/app/webroot/fckfiles/file/52559411611.pdfIn PDF document text
    • https://digicpictures.com/downloads/zuxovotamonapudomut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=cara+menghapus+situs+di+chromePDF 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.

FilenameKindSourceSize
font_00_sfnt_off0000e223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE223 16928 bytes
SHA-256: b7829624d85d4a41b1b06fdbd7b14c034b6cc20d8f1dca39994f61ad3275c02d
font_01_sfnt_off00010e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0A 11048 bytes
SHA-256: 1843c80124b0a150e3def9e15657281537510b7bd854746bb866b000f34b5fd7
font_02_sfnt_off0001275f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1275F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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