Malicious PDF — malware analysis report

Static analysis result for SHA-256 572d55fe19154bd1…

MALICIOUS

PDF

72.1 KB Created: 2021-06-13 09:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 49dbfcb42eff39e06490cd45e2a6f801 SHA-1: 8d0b4b9bdb8e89e0824c325a3fa98ab17f24040a SHA-256: 572d55fe19154bd1d4a3e4b397ea31edceff166d7e73614bc76062a66be5f075
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious by ML classifiers and ClamAV, detected as Pdf.Phishing.Trojan. The document functions as a link farm, directing users to various URLs, many of which are hosted on compromised WordPress sites, under the guise of providing a movie download. The embedded URLs and the overall structure suggest an attempt to trick users into downloading further malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8726

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://catamma.ru/uplcv?utm_term=laiye+je+yaarian+hd+movie+download PDF link annotation
    • https://travelsafeway.com/userfiles/file/terone.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/c012cadf9bb91898376f32d590eafcbc/totufodel.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/4526e2d62236e562494d48378d94d9fc/junerego.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3fdbb5f77---55544928112.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/lujij.pdfIn PDF document text
    • https://greenfuturevietnam.com/Upload/files/16334453471.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606cba14366b3---kawewezifore.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842371f011f---zuworugalegakomowob.pdfIn PDF document text
    • http://chouchoudauphongongtay.com/upload/ck/files/lanasukulejokivak.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607216ba1eb6a---difeperijiwo.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/zeminodelaxerodizifapugof.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/53537993874.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/9c2c5a984efaa9930a298670e6b6bc04/63561871933.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/iuadmmuq05u8dh2o3krjacf7g7/37194607045.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/1d32ef75fa1bed2c724069838d8078b2/37079480658.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C4 5160 bytes
SHA-256: 0be6c03078126fb132c645d3c7c90dc24dfa7e3d366b129c2842623a1f0284de
font_01_sfnt_off00010346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10346 10696 bytes
SHA-256: d6deab67473f8372695589b1d67d55a595f68cfcddf52512c38a2b472d7c2b13

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