Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe22ca7b0e648b24…

MALICIOUS

PDF

98.1 KB Created: 2021-07-03 05:30:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 961e706aa11dcd6022cb613fd63f426d SHA-1: c21d6a7f83a3290aaaf6a8b32ae42daf1098a6be SHA-256: fe22ca7b0e648b244bfda02ddf81b100d9ffdc738153ad8ca9bfef9119e489f2
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a heuristic firing for a 'Clipboard command execution lure', indicating it instructs the user to copy and paste commands into a shell. This is a common technique to bypass initial security measures and download further malicious content. The presence of numerous links to potentially compromised WordPress sites suggests a link farm used for hosting or redirecting to malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

Heuristics 6

  • 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.
  • 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 http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160aea6e34d660---60788820787.pdf In PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/7o0kmajnv8l53qhrrvc6fu6q15/pilibegisukewupemebupasuj.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f4a2b8c93---99256982050.pdfIn PDF document text
    • http://onishi-kyosendo.jp/archive/39859087028.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/8fc642vi7k2f8du0ha1o3g9b6u/rulakusipit.pdfIn PDF document text
    • http://nfc.soo.jp/file/gavigitubopejosakijateb.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/90418258786.pdfIn PDF document text
    • http://dlt-nkp.com/fileupload//file/sovefatij.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160722bca197e9---boxer.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f644f000d4---gokojenizeginodomeva.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/3766986379.pdfIn PDF document text
    • http://bonfiremadigan.com/uploads/fckeditor/file/saluroduniwokopo.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609b14b6934c9---69947411914.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fe57c4c82---xizasovabedotewuto.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f434965945---36552880866.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bddfcb7a7da---42565067035.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/7nfbaprgcc0hqag2gfglscugu0/gipanozuxitaveponep.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160724b419d659---xumufukosulodarofodi.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/e73940b33bf850b427715d941db6013f/misiratefo.pdfIn PDF document text
    • http://ud2-140.com/files/dotogixiluluxugaposemaf.pdfIn PDF document text
    • https://gikguamerica.com/userfiles/file/47832385033.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/13951207529.pdfIn PDF document text
    • http://au-zlato.sk/upload/files/87153106789.pdfIn PDF document text
    • http://otczenacts.com/media/files/faxenuwuzujozonuveju.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/44mvk9soq4gbfufnlae19t0uvl/24875112395.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=ark+ascension+commandPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE2 9096 bytes
SHA-256: c91001303cb9c0c976fee49ef37c1260e9dbfc50fc6ba3967f15691a19b3af89
font_01_sfnt_off000119c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C9 18572 bytes
SHA-256: dc2cbf73fef671c984fcfb66769237d5cddade1a3a98ce2dfafd3727d49d33de
font_02_sfnt_off00014acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ACD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000162e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162E4 10460 bytes
SHA-256: ececbfc766f9947249c8d7619d398a2a4706f2e35eb620e4323f4389eeb39224

Open this report in the interactive analyzer, or submit your own file for analysis.