Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b262c62e2ec1d79…

MALICIOUS

PDF

67.9 KB Created: 2021-06-28 23:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: abaa3d503f232208eeb29f317ecbb3a8 SHA-1: c145d4168259dc939b160ba8bdf5cd7ca2838f13 SHA-256: 9b262c62e2ec1d79fe7b56dd56705f84711da03c287a5ff1e5050b3bc281f6ca
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, a common technique for executing malicious code. It also features a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to host and distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing lure or a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6961

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/8d5a7c4ce19496b2d8fbd040566c70cf/nusenazuranozasegolobib.pdf In PDF document text
    • https://bevelec.com/bevelec/dossierMois/file/55512683697.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb5949cf0b---pipabafalori.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608f1eb9dc113---40898416863.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/16077f0c88722e---rojelitiwojejowifude.pdfIn PDF document text
    • http://huntland.hu/upload/file/jutuzaxedenilazasa.pdfIn PDF document text
    • http://contelex.it/userfiles/files/59176591982.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc2307b4241---gezafurajivire.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/bd0233a38e268c5fc52b0dd5ba0a7d5c/rujufidasifatujefop.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/858de81929ecbbbed530fa3e5ad53246/fuzalivuvumibiro.pdfIn PDF document text
    • https://foodvellythailand.com/upload/files/wirovutol.pdfIn PDF document text
    • https://98ing.com/upload/ck/files/20210624_065709.pdfIn PDF document text
    • http://carefirstwalkathon.com/clients/8/89/89514deb4c0e8807eb046cac28c4977f/File/3636115161.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/3364913378.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/jht7nbsnvm56hdalvt5sk1klu8/11210746587.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/motuwovopetefefadugumode.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/7c38183018d3a08c10ae98bce0159213/tavujetegaduxol.pdfIn PDF document text
    • http://allasclub.com/campannas/file/24404945666.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/f77aa961a0e66033745e3a421daf6a42/12728262652.pdfIn PDF document text
    • https://mariapolis.net/ckfinder/userfiles/files/xavotobegam.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/dqcu0rleju5vse1g0ocet3ap07/timemoxidirijosizonilim.pdfIn PDF document text
    • http://technoauto.jp/js/upload/files/17512227671.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/820762019af75fad6acc93e166f62d7e/nusagimusapu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=the+space+shuttles+have+made+travel+to+thePDF link annotation
    • 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_off0000f00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1