Malicious PDF — malware analysis report

Static analysis result for SHA-256 062bef04d66ec7db…

MALICIOUS

PDF

79.5 KB Created: 2021-09-12 10:20:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: bf46222782a14566822025fc171721d9 SHA-1: 0a658105b7f5a1848bce0d4df421512c4897cd1a SHA-256: 062bef04d66ec7db76682474d267e811700161f65a069872c72a7b4dfbec648b
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 http://wccflooring.com/userfiles/files/vogijulesoliluteveju.pdf In PDF document text
    • https://www.totspotdaynursery.co.uk/ckfinder/userfiles/files/sikivaviziguvumokofi.pdfIn PDF document text
    • https://unique-u.biz/images/uploads/file/83600423930.pdfIn PDF document text
    • https://molecult.metallo-tests.ch/sites/web/upload/files/sajenokamogilu.pdfIn PDF document text
    • http://kuresi-kaitori.com/upload/content_pic/files/nojupogog.pdfIn PDF document text
    • http://sahcarpets.com/userfiles/file/28881786986.pdfIn PDF document text
    • https://mzlpro.com/web/img/podborky/files/vumegedutesemunu.pdfIn PDF document text
    • https://rimi.sk/userfiles/file/rejojuxemolibikofi.pdfIn PDF document text
    • http://abwcockeysville.com/uploads/files/xatakim.pdfIn PDF document text
    • https://voziky-paletove.cz/mctree.cz/pictures/other/files/49354778381.pdfIn PDF document text
    • http://erago.cidees.com/uploads/files/davedunibubu.pdfIn PDF document text
    • http://tomei4x4.jp/js/upload/files/rovujibosodufapisep.pdfIn PDF document text
    • http://nepodoshlo.kz/ckfinder/userfiles/files/dexudogemutowogutodo.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130f6e19f6b8---muvatomap.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/ca9b6e63a5180dfa59378491d2adbc68/zalajezunexikibikamute.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/5624264393.pdfIn PDF document text
    • https://rugsdirect4u.com/uploadedfiles/file/27283186516.pdfIn PDF document text
    • https://vivekanandbawwa.com/userfiles/file/foxedewem.pdfIn PDF document text
    • https://sitarasign.ir/data/file/rolojuwawukevu.pdfIn PDF document text
    • http://k2plusinterior.com/userfiles/64662889933.pdfIn PDF document text
    • http://ver9ctrl.sonikgps.com/ckfinder/userfiles/files/boxuxomurexiseti.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=friv+games+to+playPDF 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_off0000d5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A5 10648 bytes
SHA-256: cbe6e77c93fac64665adbdf8aacaeb364d1b98419a7189a97f7f68e2bd4bb6da
font_01_sfnt_off0000ee14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE14 16648 bytes
SHA-256: 5e63f1f233bb79538c2fb434e7d306a06226fc284cab6faddbf9887dbd6c8bef
font_02_sfnt_off000118c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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