Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd9540071491fcd7…

MALICIOUS

PDF

205.6 KB Created: 2021-01-31 19:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 67f8f3d19efd2b2767b80f887ee28b76 SHA-1: 693c885e289492279633e5d5a993a5973648254e SHA-256: dd9540071491fcd71bf09462db890482311618122ee8f6542e4d8192f5c4c337
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.001 PowerShell

The PDF document contains lures for installing browser updates and executing commands via the clipboard, indicating a social engineering attack. The embedded URL suggests a download or redirection to a malicious payload. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9859

Heuristics 7

  • 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://jottigo.ru/aws?utm_term=firefox+browser+android+2.+3 PDF link annotation
    • https://gumelajijepepa.weebly.com/uploads/1/3/4/6/134639918/xosixu.pdfIn PDF document text
    • http://voxofixixaj.iblogger.org/51106500491.pdfIn PDF document text
    • https://pulezigo.weebly.com/uploads/1/3/4/6/134600697/9714a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5fddc87319b8f.pdfIn PDF document text
    • http://zerkalo-fugicar.website/bowenajeluvokujezotaramittrdhv.pdfIn PDF document text
    • https://suxugugufagiwa.weebly.com/uploads/1/3/4/7/134740592/tomubipawojekelaxeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415309/normal_6000c45234e4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366316/normal_5ff97d8f7a3de.pdfIn PDF document text
    • http://zikapipumimapo.22web.org/18243594858.pdfIn PDF document text
    • https://rigafimer.weebly.com/uploads/1/3/4/9/134901715/vepevudedira_kunadefuvaxuz.pdfIn PDF document text
    • http://bofinaposo.iblogger.org/figajekakagixewufilurovik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421048/normal_5fd0a01abdb69.pdfIn PDF document text
    • https://mazanotofubemiz.weebly.com/uploads/1/3/2/6/132681192/manafeku_nivexelax_jilumu.pdfIn PDF document text
    • http://uber-global.com/pexidazukavopejewolmf1ur.pdfIn PDF document text
    • http://sanalunuguto.22web.org/75756577224.pdfIn PDF document text
    • http://indital.fun/20992593815z4tku.pdfIn PDF document text
    • http://esclick.pro/craigslist_ny_cars_parts_by_ownerpqa8z.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://palalujopaxuv.epizy.com/lisopesago.pdfIn PDF document text
    • http://sawutekoxa.epizy.com/silatexi.pdfIn PDF document text
    • http://zunimesigo.rf.gd/58222300155.pdfIn PDF document text
    • http://majoxokusixapav.epizy.com/vehicle_crash_report_by_vin.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/android_recyclerview_adapter_notifydatasetchanged.pdfIn PDF document text
    • http://vubixegigag.rf.gd/musegugemonigopigil.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D551 5452 bytes
SHA-256: 7155b198eb47d4ce6c68cae7119e40dd2cf416a1e3f67d5f5fcf672576f5079c
font_01_sfnt_off0002e809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E809 12540 bytes
SHA-256: 8337da9f1f9ac1d38dbd7f1a9c8167290683b4cd79e6db58591b9edadbab70ec
font_02_sfnt_off000311a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311A8 16088 bytes
SHA-256: 3c1c7bd747a9a8f6e1c531457064e9378d9a893e5271ac7381d9d0015290d8f4

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