Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ae380659df71d7…

MALICIOUS

PDF

61.5 KB Created: 2021-06-21 15:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a8cfc4aafda28b25790ff4ee46724c76 SHA-1: d5b294dba9297fa75a2ba9bdf7963d720627d927 SHA-256: 47ae380659df71d7657715069de325dfb1f899399e3326dd064a758396e23fbb
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. The document contains a lure instructing the user to copy and paste content into a command-line interface, which is a common technique for executing downloaded payloads. Multiple URLs were found pointing to compromised websites and disposable hosting, suggesting a distribution network for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://arichaindia.com/userfiles/file/90846007176.pdf In PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16074460fd5ecd---lojalasaxojemilonalotubi.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/f8c52833a8d4529d1612c0497be29eb8/3419663424.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c32dcbb541---62100366340.pdfIn PDF document text
    • http://dtpokebar.com/uploads/files/24022169054.pdfIn PDF document text
    • https://bisnismedsos.com/userfiles/file/45219051773.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/p9bavsebic79jcfanu937lfq26/60452211743.pdfIn PDF document text
    • http://bestapp4u.com/admin/uploadedfiles/file/judujitasezesuriferakaji.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/604f8f5ad48c16407d3e74b6dea93437/bagagifudarak.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160a2eed237117---defijokakatibasotiribu.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d290c5e6c---71968448554.pdfIn PDF document text
    • http://gdaniec.com/upload/files/78948949628.pdfIn PDF document text
    • https://naoshima-habitant.com/36006657878.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160757709d439a---mazanelinozowazux.pdfIn PDF document text
    • https://chambres-hotes-aube-bleue.fr/userfiles/file/36085260531.pdfIn PDF document text
    • http://izumrud38.com/ckfinder/userfiles/files/dabidebokelopazimujinuz.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/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=roblox+prison+life+scriptsPDF 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB495 5016 bytes
SHA-256: 634b9f7cce6580c4f113ab417733092a9f678ddd9ab7ea19331c7fd62d52f0c3
font_01_sfnt_off0000c5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C2 10420 bytes
SHA-256: e95510e5b7183606a263ac11e2029388d971d626ea97aaca6f9ecdb1c6ac5dfa

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