Malicious PDF — malware analysis report

Static analysis result for SHA-256 8893956050f69097…

MALICIOUS

PDF

83.2 KB Created: 2021-09-16 20:29:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 92e00d63b7dcf3a574168b2269b15966 SHA-1: f901637431973de392d47cf22c2f6ef6e79c2035 SHA-256: 8893956050f690978ed5c5f3f0a1c84e937aa59aca8a7717595398044c0402c8
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ClamAV as 'Pdf.Phishing.Trojan' and ML classifiers indicated a high probability of maliciousness. It contains numerous embedded URLs, including one that appears to be a redirector for potentially malicious content. The presence of a 'download button' heuristic further suggests a lure to download additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://laborke.ru/uplcv?utm_term=tom+and+jerry+movie+in+tamil+watch+online PDF link annotation
    • http://amidoux-peintures.com/ckfinder/userfiles/files/pelutofaxobifebetejalon.pdfIn PDF document text
    • http://autoscuolepintozzi.it/userfiles/files/fawotojuleru.pdfIn PDF document text
    • http://syarmarka.ru/userfiles/files/82885568633.pdfIn PDF document text
    • http://ilovechardonnayhills.com/userimages/paxeka.pdfIn PDF document text
    • https://12shio3.com/contents/files/pisanezusewexap.pdfIn PDF document text
    • https://codecs.ro/images/file/sesuzakurewobivisugi.pdfIn PDF document text
    • https://arendic.cl/files/rowiburenim.pdfIn PDF document text
    • http://abwninemile.com/uploads/files/zumevisosi.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d206a0635b---jijamivozuzatovakixemike.pdfIn PDF document text
    • http://xindeshiye.com/uploadfile/file///2021091311292293.pdfIn PDF document text
    • http://khachsanmyngoc.com/upload/files/36278762910.pdfIn PDF document text
    • https://stollerco.com/testingsites/advantage_aviation/assets/media/file/17779221695.pdfIn PDF document text
    • http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/21065227355.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/wulusanogaj.pdfIn PDF document text
    • http://zeroseistudio.eu/userfiles/files/pamubetijefi.pdfIn PDF document text
    • http://bfcy88.com/uploads/files/32531409992.pdfIn PDF document text
    • https://cahayamimpi1.com/contents/files/67746494527.pdfIn PDF document text
    • http://seasonsblinds.com/uploads/ckfinder/userfiles/files/2218277224.pdfIn PDF document text
    • http://ever0036.com/assets/uploads/ckedit/files/20210914135310.pdfIn PDF document text
    • http://computer-rudolstadt.de/upload/file/27299263614.pdfIn PDF document text
    • http://tinavaron.com/ckfinder/userfiles/files/fefasonunalidosobavipur.pdfIn PDF document text
    • http://woori-tour.kr/FileData/ckfinder/files/20210911_A46B14C0ED23284E.pdfIn PDF document text
    • https://penzion-pod-rozhlednou.cz/img/file/gugap.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.

FilenameKindSourceSize
font_00_sfnt_off0000d90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF123 10824 bytes
SHA-256: c107f7d77be900c3777088c7b0af39c0c380264f9cf15da08cf7936f70ba3192
font_02_sfnt_off000109ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EA 20036 bytes
SHA-256: d7160a7ef3ab903976ade283478047d58bfe2889faf6bb9085b2283d97609450

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