Malicious PDF — malware analysis report

Static analysis result for SHA-256 493774165705693e…

MALICIOUS

PDF

66.4 KB First seen: 2021-10-07
MD5: 8331449324555a14c35616745fcc0723 SHA-1: 81df60d45ddb3d1eee1df6822c07f50b437ed39a SHA-256: 493774165705693e0a756ca489fb01034c5a12b1e2d9994626f957a6b316f057
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of a phishing lure, indicated by numerous embedded URLs pointing to compromised websites and link farms. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this assessment. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7095

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
  • 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
  • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

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