Malicious PDF — malware analysis report

Static analysis result for SHA-256 6836eb9d3986dd83…

MALICIOUS

PDF

69.4 KB Created: 2021-10-01 05:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: df7384466bba039d9e846018b90b38a9 SHA-1: c1a81f537ac0c3a3cb9b16104f16a32c2aae185e SHA-256: 6836eb9d3986dd831803c2916e4d66f34ff364667c86890c2ab9d7050088c346
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ClamAV as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting and are likely used to redirect users to malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm, suggesting a phishing or malware distribution campaign. No scripts were extracted, but the nature of the embedded links points towards a malicious intent to lure users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 https://garglob.ru/uplcv?utm_term=failure+to+launch+full+movie+123movies PDF link annotation
    • http://armanetti.com/images/38831235681.pdfIn PDF document text
    • https://uhcp.com/editor_upload/file/38555824758.pdfIn PDF document text
    • http://lex.tj/img/file/85875101479.pdfIn PDF document text
    • http://selidbe-beograd.info/files/netororil.pdfIn PDF document text
    • http://kancelaria-perfect.pl/app/webroot/media/files/jaxopuzobajarade.pdfIn PDF document text
    • https://www.kuwaitpolyurethane.com/ckfinder/userfiles/files/25005853529.pdfIn PDF document text
    • http://ristoranteibucanieri.it/userfiles/files/gujaxusuwud.pdfIn PDF document text
    • http://ctm.it/userfiles/file/nefukuxakuf.pdfIn PDF document text
    • http://malovanesklomh.cz/images/file/82723531020.pdfIn PDF document text
    • http://sweatrinserepeat.com/ckfinder/userfiles/files/kimilabal.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/vuxuzumupob.pdfIn PDF document text
    • https://doxity.ro/ckfinder/userfiles/files/lopunebizaravigukado.pdfIn PDF document text
    • http://h-n-s.net/userfiles/file/fupedawamipewuvej.pdfIn PDF document text
    • https://infotechb2blite.com/bot/ckfinder/uf/files/zaremabesiruluvoji.pdfIn PDF document text
    • https://garraldaarquitectura.com/garralda_userfiles/files/517108228.pdfIn PDF document text
    • https://sunsoftinfoway.net/ckfinder/userfiles/files/78256576862.pdfIn PDF document text
    • http://abwplazaview.com/uploads/files/kopim.pdfIn PDF document text
    • https://wineuniverse.us/userfiles/file/vawasifaroxupif.pdfIn PDF document text
    • http://csc0898.com/userfiles/file/20210905101146_4nkb1b.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16156537a9db89---49580723934.pdfIn PDF document text
    • http://sromedical.com/file_media/file_image/file/51255261594.pdfIn PDF document text
    • http://boldogelet.hu/media/zuzuvupisilaxewesozumo.pdfIn PDF document text
    • http://ohsongpharm.com/ckfinder/userfiles/files/madusifitunani.pdfIn PDF document text
    • http://spbmedaks.ru/sites/default/files/uploads/45173389904.pdfIn PDF document text
    • http://www.ih-consultant.com/ckfinder/userfiles/files/motep.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_off0000af92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF92 15132 bytes
SHA-256: 811adcae5bad4886f7932ff5121f513e1f3f5eae68be8d36e1abdf698a13fcd3
font_01_sfnt_off0000d606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD606 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ee1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1D 11088 bytes
SHA-256: 7733bbfe7e28c4af3bb09361a0456ca74f21e280e14c819618450cef998edc92

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