Malicious PDF — malware analysis report

Static analysis result for SHA-256 76764c00cddf2576…

MALICIOUS

PDF

216.7 KB Created: 2021-06-26 06:15:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f5a6343e1d3eb9ba2648e3b414e2d7ef SHA-1: d8f324eccd9789e0ee904eec8d004a747c0ea386 SHA-256: 76764c00cddf25762576a20f2011403f6a5f9ff6a8a236a83dc4af51ca219693
186 Risk Score

Malware Insights

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

This PDF document exhibits multiple high-severity heuristics indicating malicious intent. It employs social engineering lures for advance-fee scams and browser update installations, common tactics to trick users into executing further malicious actions. The document also contains instructions to copy and paste content into a command-line interface, likely to execute a downloaded payload or facilitate further compromise. While no scripts were directly extracted, the combination of lures and the instruction to use command-line execution strongly suggests a downloader or exploit delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9685

Heuristics 7

  • 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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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
  • 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.
  • 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://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a92188654b2---348481838.pdf
    • http://metabolit-plus.ru/files/file/samanu.pdf
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/a4b32a4b65f8f69226ffc5e0a22905e1/19548673998.pdf
    • http://adamlegal.com/userfiles/file/bisofegatowanodewebodagat.pdf
    • https://fullhousetourism.com/UploadFiles/file/20210609190649128.pdf
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/e3bf734add45297399159d36f2802b69/rasenabajesi.pdf
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/329bdc6d5547ff3322d830cdb91d3559/lulelunirazapexur.pdf
    • https://soechi.net/userfiles/file/17896315729.pdf
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/2da5469bfefe71dd874bff22dea24bf8/36047121955.pdf
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/685198775a36ccbbdf9d3807192cd1bf/54918650511.pdf
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/ejfm2koedo54nh4088979ed0u1/30339986754.pdf
    • http://dolphinegypt.net/userfiles/file/82074818394.pdf
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/f505c1c12615cad501e65174441e20a4/mezemi.pdf
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/84f597b8952e470269b4ec7fb641bcbf/63416048152.pdf
    • http://crm333.com/documentos/file/zefexuzatabarotuxisugesu.pdf
    • http://www.sport-konyv.hu/userfiles/file/150865878.pdf
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/niie7lp5br0kfq84u82oo6ifsd/44744502683.pdf
    • http://3q1p.com/upload/file/210624112725656251458g9js19rw4.pdf
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/415ee7ac3e8f527281298c9a573e9db1/gikasexawekaraxugex.pdf
    • https://atlastoursntravels.com/userfiles/file/24807546262.pdf
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/up8rj6ujs6l3sj7m9kllp0lkh3/dewurapomojikaromo.pdf
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087a5807782b---35266609075.pdf
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/ba2d816aba5fabb21287b97913208fa1/30476450721.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=firefox+requires+a+manual+update
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002dd08.bin
4da009ee447788bef2fb7691750af3c995daa9781f890a3b502f928d4026024d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD08 10984 bytes
font_01_sfnt_off0002f64e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F64E 16792 bytes
font_02_sfnt_off00030e5f.bin
450eea5fc67953cc3bdc764260aa6f1739571c17331c9588074966c3dbef4c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30E5F 16088 bytes
font_03_sfnt_off00032390.bin
ebf6f7692d5186e695e6a8a9c11430080975df9217140f4ded3b013161d396f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32390 18304 bytes

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