Malicious PDF — malware analysis report

Static analysis result for SHA-256 02254413fe4f60a5…

MALICIOUS

PDF

69.6 KB Created: 2021-09-25 21:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: f05303e52e51dc7811237ea752f73da5 SHA-1: c84b3217f25ff2e686ffa3a5635dde319a7a2200 SHA-256: 02254413fe4f60a5ba92eb4f33ab883c75b7504358b4da4104452eb16399d4e7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://laptopplus.be/app/webroot/files/userfiles/files/zokurilif.pdf In PDF document text
    • http://nt-module.ru/ckfinder/userfiles/files/majisexufotub.pdfIn PDF document text
    • http://lammermoor.net/imagenes/file/85286485415.pdfIn PDF document text
    • https://misbahelmudii.org/ckfinder/userfiles/files/sobavanakaduma.pdfIn PDF document text
    • http://sarkanyhajo.hu/files/file/bebizojekatatevelam.pdfIn PDF document text
    • http://budgettranslation.hu/sites/default/files/file/45620425359.pdfIn PDF document text
    • http://girc.ncue.edu.tw/ckfinder/ckfiles/files/21360541489.pdfIn PDF document text
    • http://honmamon-s.com/img_seminar/userfiles/file/50861934241.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/72926589911.pdfIn PDF document text
    • http://ppfi-online.com/userfiles/file/dativakegeradepim.pdfIn PDF document text
    • http://euromarkcreations.com/new/fck_img/file/xulas.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/50926844165.pdfIn PDF document text
    • http://computer-rudolstadt.de/upload/file/numevubufebiwedeb.pdfIn PDF document text
    • http://tandprotheses.com/ckfinder/userfiles/files/6822531849.pdfIn PDF document text
    • https://tideandtigers.com/ckfinder/userfiles/files/28282503758.pdfIn PDF document text
    • https://prestinieurope.ch/userfiles/files/tikokelada.pdfIn PDF document text
    • http://d2dgroup.net/upload/files/62212584660.pdfIn PDF document text
    • http://mocphatreal.com/assets/images/ckfinder/files/20872404054.pdfIn PDF document text
    • https://www.sherpachristain.org.np/ckfinder/userfiles/files/nujibon.pdfIn PDF document text
    • https://volandovia.it/public/fileeditor/file/gexuwofugisumugolabaduno.pdfIn PDF document text
    • http://snap-drone.com/userfiles/file/24018343735.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/80241939684.pdfIn PDF document text
    • https://pataniforum.com/admin/jquery/ckfinder/userfiles/files/30665514761.pdfIn PDF document text
    • http://dorisemitchell.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/87217006523.pdfIn PDF document text
    • https://idealist.ro/userfiles/file/degarilaropot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=sweet+crossing+snake+io+apkPDF 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_off0000b013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB013 10756 bytes
SHA-256: 27ef3e127d9a0d7464a2c681d34685f105dbc3ff0088f7b6b5d4f03e7323ac32
font_01_sfnt_off0000c902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC902 15652 bytes
SHA-256: 1c4c3c065485def587a9c432a532aea427fa3dd13fc620c3a26cbbece29a0336
font_02_sfnt_off0000f0a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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