Malicious PDF — malware analysis report

Static analysis result for SHA-256 95deb489868ebba3…

MALICIOUS

PDF

83.8 KB Created: 2021-09-07 08:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 033b221c4e868343c487ad8542f779c7 SHA-1: 56d58f7525eca14c796c9b69a5e637b0c893637a SHA-256: 95deb489868ebba307de4ae72e0e5aeb0b6d433d69221619b009b53ed613e10d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm intended to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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.
  • 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://chcial.ru/uplcv?utm_term=synscan+v5+hand+controller+manual PDF link annotation
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/657d9ec853a944bda8af701cbd0d0dd4/14173396473.pdfIn PDF document text
    • https://www.temsilcifirsatlari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f353f15c0---bavetubebuteted.pdfIn PDF document text
    • http://tuzy.pl/Upload/file/sizexabutitizugewiz.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090dd03761f9---49344212402.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf11e64a9b---19029564312.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073cc2779a96---1438428436.pdfIn PDF document text
    • https://medtek.vn/storage/file/50648890310.pdfIn PDF document text
    • http://vtaky.sk/media/file/30263206347.pdfIn PDF document text
    • https://naucharts.com/ckfinder/userfiles/files/sutefabonu.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c96202e4d1b---dexaxosemajapevotejes.pdfIn PDF document text
    • https://ph789.com/pinhsuan/files/file/151922452.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/fl4r01slr6ovu89mjqulcek656/sanixaweb.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160cd857b6ed3d---zexuwaxipegewavudozubipu.pdfIn PDF document text
    • http://cukorbetegshop.hu/files/26514989128.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/bgh3v391eagrng4ertutr53ei9/wokewutofamitabejox.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/4dab2sh4teb0peg4mujf8jt252/lusobomibuwadugivirasaj.pdfIn PDF document text
    • http://gabinetortodontyczny.eu/userfiles/file/94241833078.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/9b10d2d2a60f969b97d55327ed53e5bb/nuzomaxosusugawabopir.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/8364b9622acf2bbf67e845ca452b6703/vulajo.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607497704d6fc---40806777430.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/7052e1bfaad86abaa84e58e0acf225fa/woxibigetew.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16074fe1d1695b---fapado.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/goxegi.pdfIn PDF document text
    • http://rhondachem.com/d/files/jitomonusenakuwa.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/d88c0c9db64d32fb57eaf58c8c020d61/fetovuxetupebifu.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_off0000e053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE053 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f86a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86A 11032 bytes
SHA-256: 5e57953acb26269864623dbc478764f605fa78b6ca48c4cd442cb9611ffb2169
font_02_sfnt_off00011207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11207 18272 bytes
SHA-256: 1bbf721869bb8f584645e7ac112279292f83bf72ccdb561b212827f67bc4b9a9

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