Malicious PDF — malware analysis report

Static analysis result for SHA-256 070827a233fa889b…

MALICIOUS

PDF

62.3 KB Created: 2021-09-04 22:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6d301080a189e2d304cad3a84f058e15 SHA-1: dab74e75ae60cd8e959c873f271a8e72f5ca41a4 SHA-256: 070827a233fa889ba6973e5bc9ce6d541649f3a2c334d7170512c81bf90ba6c8
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of AcroForm buttons with action triggers further supports the possibility of user interaction leading to malicious redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8923

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.
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • 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://drafthe.ru/uplcv?utm_term=free+printable+worksheets+reading+comprehension PDF link annotation
    • http://luingpyrex.cz/foto/Image/file/buxukagijef.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/160b89ba59c9b0b7be0f0f37ea540aa1/47031774819.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/e51366577d64079ed503dac702eef115/80158644077.pdfIn PDF document text
    • http://vagtteam.dk/userfiles/Files/resales.pdfIn PDF document text
    • http://halanmilk.com/upload/files/guxelu.pdfIn PDF document text
    • http://annamsaigonlaw.com/upload/files/24362255685.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210612_5D6FB25AAF90293D.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/9j75qcccf7g90dg739lmc0je7r/89672653603.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c080f06748c---favopemixesaseniteravosej.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb320209a0e---56315182896.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b919841a994---bagire.pdfIn PDF document text
    • http://backupcenters.com/userfiles/file/28135194170.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca4ea8e600---tisaloxasi.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/8rmrfqs2v0sqadpua7ul1e4mnp/niriraxujufifitak.pdfIn PDF document text
    • https://petikdaun.com/contents//files/61677266069.pdfIn PDF document text
    • http://vladjurnalist.ru/archive/file/48441673562.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/832dc8e4b28b043104299a02e01459ee/rupivuzofevup.pdfIn PDF document text
    • https://saintarseny.ca/sites/saintarseny.ca/files/file/2615453442.pdfIn PDF document text
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/8drp5ivs4ksv56jv3dp5o4rk3s/vofefemukabagituz.pdfIn PDF document text
    • http://abnicum.ru/files/file/zubixefinugunol.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a3d22c391---67975434375.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160fcbe3198003---tirufug.pdfIn PDF document text
    • https://digireg.es/upload/kijodixek.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad2a2a7ce5b---66516700974.pdfIn PDF document text
    • http://studiocariola.com/userfiles/files/29388544643.pdfIn PDF document text

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