Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5749fda67f0165f…

MALICIOUS

PDF

84.4 KB Created: 2021-09-09 15:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9d65ae84adc77f1819509f38c63ba6ee SHA-1: 3469ab2ce9dbdbb387f22fefbd0d9ab90adab635 SHA-256: f5749fda67f0165f54a3f6296ec38121cb052d62699ca61dfe2a4bd27deeb922
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as 'Pdf.Phishing.Trojan'. The document contains a link farm pointing to numerous compromised or disposable hosting sites, suggesting an attempt to distribute malicious content or phish users. The presence of 'cmd.com' in the document text, alongside various URLs, indicates a potential attempt to execute commands or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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
  • 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://bennett-legal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/7718061634.pdf In PDF document text
    • http://pataibicaj.hu/userfiles/file/nuxuzosike.pdfIn PDF document text
    • http://boletos.luzservicos.com/ckfinder/userfiles/files/nuzidutesobababux.pdfIn PDF document text
    • http://forma8.kz/ckfinder/userfiles/files/97434193960.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/4e2c507b6e7cb38ae4faf6669443dd1c/89942059218.pdfIn PDF document text
    • https://onwater.my/uploads/file/95876400800.pdfIn PDF document text
    • https://agronlogistics.com/userfiles/files/vameg.pdfIn PDF document text
    • http://runwellconsulting.com/file/file/3774079229.pdfIn PDF document text
    • http://qdcmd.com/data/files/fibufijudixubasuk.pdfIn PDF document text
    • http://warwick-ems.org/userfiles/file/97839928388.pdfIn PDF document text
    • https://rcvizovice.cz/ckfinder/userfiles/files/61151333471.pdfIn macro / runtime command snippet
    • http://bishnutoursandtravels.in/userfiles/file/zoxodakibeba.pdfIn macro / runtime command snippet
    • http://agro-vostok.ru/userfiles/file/49885990938.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133ad4cd97da---39836639252.pdfIn PDF document text
    • http://sns.hu/_user/file/gilitikuxudovexebegamobi.pdfIn PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/ginadolasitewiw.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/tunoremivagedapit.pdfIn PDF document text
    • http://lineshare.net/upload/files/20210909105432.pdfIn PDF document text
    • http://tandprotheses.com/ckfinder/userfiles/files/76423575301.pdfIn PDF document text
    • https://lingchuanfloor.com/app/webroot/userfiles/files/pogujutaxenaranajagido.pdfIn PDF document text
    • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/67164857299.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16132d2bd729ec---japumadigogafe.pdfIn PDF document text
    • http://konberdbio.com/upload/files/kanis.pdfIn PDF document text
    • https://miraclechuppahs.com/userfiles/file/giboxogomubifajufo.pdfIn PDF document text
    • http://hoanggiaphatstone.com/upload/files/pinoviferapigiwewowe.pdfIn PDF document text
    • http://warwick-emsIn macro / runtime command snippet
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=video+show+play+storePDF 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_off0000e53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53C 10556 bytes
SHA-256: 72a8701e5fcd74ce23daa616fff258e0446914735c1e078c1f40d470671a4a0e
font_01_sfnt_off0000fd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD83 17788 bytes
SHA-256: b30d638f4690431b42dfebea045472d299d0889b01b409d382fb0b946889477e
font_02_sfnt_off00012c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C0D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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