Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa37df68549407a…

MALICIOUS

PDF

85.4 KB Created: 2021-07-21 07:15:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 92f5613135b674b6baf32ed3951acb9f SHA-1: 8fcc374654f63ed3e599e6a79ab2760fe4120ce2 SHA-256: eaa37df68549407a49c1c64d1063b4b745e723a6aeaea28cc6da4e7d452b7999
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, indicating an attempt to redirect users to malicious content. The presence of 'Payment redirection / bank-detail change lure' heuristics suggests a business email compromise tactic, aiming to trick recipients into sending payments to fraudulent accounts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 http://beijinghuojia.cn/userfiles/file/97010926268.pdf In PDF document text
    • http://refta-bg.com/userfiles/file/95739644167.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/bpaj4jehfore2686rg9of3i19i/23466157726.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/jqh16bovmi8jdtkh89gkrtger0/82614553201.pdfIn PDF document text
    • http://usa-ex.com/images/blog//file/tubajaligiw.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0cd1e4c2de---jokuxowitirugejonakuw.pdfIn PDF document text
    • http://metisentry.net/ckfinder/userfiles/files/xejenotunivopavov.pdfIn PDF document text
    • https://tavcam.com/upload/ckfinder/files/94356865676.pdfIn PDF document text
    • http://lumieretvie.com/userfiles/file/36379278966.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/65260d10ffc68edb8c39a3e0fdd941e8/dilurupixuvuwukag.pdfIn PDF document text
    • http://brlairport.com/images/file/zagopiwurobaxuliduden.pdfIn PDF document text
    • http://beamstraffic.ae/amb/userfiles/file/lotafigo.pdfIn PDF document text
    • http://sutphinsgermanshepherds.com/clients/21958/File/taduxuk.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/oqa1dv4rmtu0ga7klje8nhe193/12596738985.pdfIn PDF document text
    • https://www.ideaklinikizmir.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608173a109cba---gosenobigedamonavi.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f2204822b---fogutolivajewoxojowak.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160aba16ac3bdc---86655456927.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d3493f65b---41775668998.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc1c8d3599---70007314743.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e4d6758f3---19935586923.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4c82c862f9---65697888276.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/wazabinowew.pdfIn PDF document text
    • https://cafesca.com/ckfinder/userfiles/files/89190283582.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b81cff7fbb0---ravapurado.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/6rfe0r96pbgnq99csr2keirr8c/81994896327.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=lottery+results+set+for+lifePDF link annotation
    • 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_off0000ee64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE64 16680 bytes
SHA-256: 1087b214bd9bde45ae73919198ddea041c83046dab7fc80980795abddde6594a
font_01_sfnt_off000119a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000131bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131BD 10112 bytes
SHA-256: b9a374ed800b5464aa7bcdd272f1e75d6d4492d8e67fc6bf69c9a67edad4ac41

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