Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4ee01932332f85…

MALICIOUS

PDF

82.8 KB Created: 2021-09-19 14:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 2cdf36eb3041468f83380797a9a29c31 SHA-1: d4ea52fce843adce9b59236dbde8987be9cf948f SHA-256: fe4ee01932332f854e78370cfc7b30919e69b6a493c63863b560c5284dac1123
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, strongly indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. The embedded JavaScript likely facilitates the download or redirection to malicious content, while the numerous links suggest a broad phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://queure.ru/uplcv?utm_term=horizon+chase+world+tour+full+apk PDF link annotation
    • http://retco.ge/ckfinder/userfiles/files/3727784702.pdfIn PDF document text
    • https://exam10.menapoint.com/app/webroot/upload/files/42018144880.pdfIn PDF document text
    • https://cqc-material.com/app/webroot/userfiles/files/82218632172.pdfIn PDF document text
    • http://autofactory-jin.com/js/upload/files/rejasajekaresoda.pdfIn PDF document text
    • https://vivekanandbawwa.com/userfiles/file/jukotigixolam.pdfIn PDF document text
    • https://schachverein-marchhoefe.ch/fcsr/news/upload/file/9308530905.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b05a77564f---76559066478.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/13909005873.pdfIn PDF document text
    • http://tlw.ro/UserFiles/file/1123142212.pdfIn PDF document text
    • https://piauiaqui.com/ckfinder/files/30836223593.pdfIn PDF document text
    • http://hotelalbicia.com/userfiles/file/75477960000.pdfIn PDF document text
    • http://baby-daycare.com/uploads/files/202109071213501624.pdfIn PDF document text
    • https://comtraining.cl/userfiles/files/gepunire.pdfIn PDF document text
    • https://sesconbs.org.br/ckfinder/userfiles/files/31626087011.pdfIn PDF document text
    • http://bonezi.morefriendship.com/upload/files/fobabetizasubewivikop.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613b559d4f4e7---rokunipodup.pdfIn PDF document text
    • http://sp3siemianowice.pl/userFiles/files/45090757562.pdfIn PDF document text
    • https://daotaolaixesontay.com/uploads/file/71208993869.pdfIn PDF document text
    • https://aakritidigitals.com/userfiles/files/14275260447.pdfIn PDF document text
    • http://masonhn.com/d/files/72490640747.pdfIn PDF document text
    • http://medica-brno.com/files/17592156617.pdfIn PDF document text
    • http://sntaviator.ru/ckfinder/userfiles/files/tikixabirag.pdfIn PDF document text
    • https://snqrsl.quebec/upload/editor/file/7513973162.pdfIn PDF document text
    • https://mauspro.net/upload/files/papaxafifemaguxiwaju.pdfIn PDF document text
    • http://oralrem.kz/ckfinder/userfiles/files/mapivubotifotefivojaxese.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_off0000daa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f2b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B8 11044 bytes
SHA-256: 2e590d3220b1664d8aea3c792b9eb042f4a490a3df637e0dadca2d136d281fe5
font_02_sfnt_off00010c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6B 18840 bytes
SHA-256: cf59bb3e415593f8c479e420c718fea3512e174bb8b6d862dd1d316ee14212bb