Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea7834fa2cfb2c9…

MALICIOUS

PDF

108.3 KB Created: 2021-07-31 06:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: f4be07bfa49f490a3a4479768c802c90 SHA-1: 568e7c3085647272c2d3b0770ab781350cb73146 SHA-256: dea7834fa2cfb2c9f4e1269e32992cb2a762d301d34651fe12ca2ab48865cd0d
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many of which appear to be compromised WordPress uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a 'utm_term' parameter in one of the URLs indicates a potential phishing lure related to 'dungeons and dragons 5e character sheet excel'. No scripts were extracted, but the overall structure and URL findings point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9881

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://oniceh.ru/uplcv?utm_term=dungeons+and+dragons+5e+character+sheet+excel PDF link annotation
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/45585399173.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/07b08e52c7defefb1c127fe66278c904/bedaragabi.pdfIn PDF document text
    • https://venefoil.com/ckfinder/userfiles/files/64688157452.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a50c176a9bf---suxeler.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5c2a4d7dc---49146390144.pdfIn PDF document text
    • http://gemwishrs.com/ckfinder/stones/files/wofobuvamugodad.pdfIn PDF document text
    • http://espokebar.com/uploads/files/24453139394.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161047921315a1---vapenogegogoxofuwef.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/athokvvvicpg5gj6nmde75jspm/memejurorurezoxigatu.pdfIn PDF document text
    • https://www.mds-horizons.com/upload/files/xufaxivinorovo.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a10f1223a2b---79891395455.pdfIn PDF document text
    • http://wolfroccatiassociati.it/userfiles/files/jiripanopo.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a04e2e05394---zisunuxopiravenevop.pdfIn PDF document text
    • http://vhs1962.com/clients/b/b9/b967f936f519796c2a696a6ed1da67f9/File/65022360766.pdfIn PDF document text
    • https://irepairplus.nl/app/webroot/files/userfiles/files/walul.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160afe24d60264---85282083748.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/62aae660fe29273de2fac747e7b7ae24/vijedewalofekij.pdfIn PDF document text
    • http://hillandbrownfamily.com/clients/76964/File/rorodomemowagotelaxedawi.pdfIn PDF document text
    • https://mn-lawfirm.com/box/userfiles/file/xavigopopugolex.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/6a26ec59006a8e648140fc8376b480f7/98456187211.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe97de7786---22919169818.pdfIn PDF document text
    • http://bsa.by/ckfinder/userfiles/files/80695105158.pdfIn PDF document text
    • https://trellisdundee.com/wp-content/plugins/super-forms/uploads/php/files/8541451d0c32a99e3595c331ee032d03/52781325475.pdfIn PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/61910113531.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/xogulipe.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160810cc8db16c---zowujabunofegobawo.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_off00014283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14283 17980 bytes
SHA-256: 5f9f0b30f3944f7ebb837d332e1a634e36630f69570c2ae91f7ddc4d9af7fb1a
font_01_sfnt_off000171dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171DC 10896 bytes
SHA-256: c377711ced25b9e1e3e1e6b311bfacf5839de2368861894f9ed890121f260ab1
font_02_sfnt_off00018af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18AF6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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