Malicious PDF — malware analysis report

Static analysis result for SHA-256 e186899592fc40fa…

MALICIOUS

PDF

321.6 KB Created: 2021-05-10 22:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 78112c3c30f57658afb563fe1161a58e SHA-1: 6f870f6e6c0f44de90fe27cdb8ac1a1a74afb14a SHA-256: e186899592fc40fa25cd028dfff7eae75422497fdf204d3e3498ae605337a1db
134 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document body, though partially corrupted, suggests a lure related to creating a font, which is likely a pretext to direct the user to download a secondary malicious file from a compromised WordPress upload storage. The presence of multiple links to compromised CMS upload storage reinforces this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9755

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.
  • 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 https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/5284d4508bdf72ca7605174e7960c82f/ximokez.pdf In PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/b9f287cde5fc65601154564595b9fe5e/fubesonumebo.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/c3o03tcu79holekabg0u09jf1n/62977766173.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f62469cf9e---31107770415.pdfIn PDF document text
    • http://anandamsanyal.com/userfiles/file/22096388736.pdfIn PDF document text
    • https://2acontractor.it/images/file/31125350112.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/ifh5ekgdomnm533cupkfgsf4aj/regunadosudavawajavifa.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/34796460ddb85b695b5c7e81746285a4/jedamulekutagimajofuve.pdfIn PDF document text
    • http://amandamaitland.com/images/file/wimibabofepuxile.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a433f46f33---gubumulijanewadiso.pdfIn PDF document text
    • https://actor-conseil.com/files/file/tesalajuvogiminorukuka.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/48677c38e981feef726ea2394731b460/7209086837.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc4d186bfd---79677207938.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e663a683c---jesevozazibuk.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804d2552ed1---32693226189.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/ojpirpvlhmrn3gp18knfvv4vfu/99106048071.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608dcbe3b64d5---16478262503.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=cara+membuat+font+aksara+jawa+di+androidPDF 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00048099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48099 4332 bytes
SHA-256: 4064222a1fcf934d79cdf66dd7e84ab29cf004696b92053d0638e83a2723d550
font_01_sfnt_off00048fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48FD1 5296 bytes
SHA-256: 685dc4b2da435bdf9e19bd799c0a934cb67f7e4117f05c356cb3361096b09ed4
font_02_sfnt_off0004a1d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A1D2 24620 bytes
SHA-256: 4255163592ed68c897750f650327fdc2d2e62266f6b609525c4c9a81d2a41b3e
font_03_sfnt_off0004e17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E17D 16264 bytes
SHA-256: 5b3c84a3b7f27fa2d9a9920e95ceb2833170953a47b2eb41607b9aa8d54a7611

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