Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c092ed865f2895f…

MALICIOUS

PDF

124.8 KB Created: 2021-07-07 05:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 9aee062fff5c32da82da8523baf54ca1 SHA-1: 01bc338358159a945a56a95d1794ad745aede71f SHA-256: 0c092ed865f2895f335eb014e7bcc04d33e3ff7df969d061f9121432e2938d68
204 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The 'Clipboard command execution lure' heuristic is particularly concerning, suggesting the document instructs users to paste commands into a shell, likely to download and execute a secondary payload. The numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, further support a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c1e7486c4---35297522768.pdf In PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/2dff1e42c5d439c4beddea93cf37ac02/12990878813.pdfIn PDF document text
    • http://konsultacjenaukowe.eu/Upload/file/xekolamem.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f0460a56b---12776388022.pdfIn PDF document text
    • http://baaningdoi.com/file_media/file_image/file/motelalasuso.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/pezirufalososazafesepo.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/96233be9067e7be5ef9fd4e51ba36c82/fogawuzimefaxoso.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c12353868b---vegizudawazomefijutunapiv.pdfIn PDF document text
    • http://scheiden-maassluis.nl/uploads//file/komojot.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/eaccc3f83563c2c314c6138059d22e53/44260949953.pdfIn PDF document text
    • http://renovfab-menuiserie.com/userfiles/file/97644263254.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa831eed59d---jofogamikiletoxuzugim.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/c53053fa4cca3564fc65c69db6992322/14646217966.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c9e02de32---mapurifive.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/d71e1656e62797e36a08c0f21434c54b/5459514075.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/54712571151.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/89867892239.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c10198f0d---pajijugefikaniwa.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f023f06512---30846348046.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/a8rogt5jhqafkls9vok1i520h1/15804602641.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a9e06e636---nufopus.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/847cb20082514edc417aa2ceda4a02c5/lozesosuguwagemorodaset.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/0jgs59kj7baikfdostgsemcapo/81145368159.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=free+minecraft+download+for+chromebookPDF 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_off000180a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x180A8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000198ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x198BA 19852 bytes
SHA-256: 898c9984880463f844716266f9055049439e7b50b416db14fef4d2b586bee97a
font_02_sfnt_off0001caf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CAF6 10868 bytes
SHA-256: a0c2ec1eabf45e5513effa90a0881119be4d3985bfe686f473ddafa38f979c97

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