Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea2033d2cefc9dd…

MALICIOUS

PDF

79.5 KB Created: 2021-07-03 04:23:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 6822c316eabd78a0ddd29c177b71eca7 SHA-1: 29356a3c5f4e3b8732154d0d3f7e9e3f8d9c2ebd SHA-256: 7ea2033d2cefc9dd6f3d46c626953f682a44c1f49ce670c0c4e4df8a76f196a9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains numerous links pointing to external websites, many of which are hosted on compromised CMS upload directories or disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, providing no direct clues to its specific purpose beyond the presence of these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://eatorhours.org/e-bussiness/fckimages/file/96970006010.pdf In PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/1fd9f362fe3840318297d057448d9f4e/pefamesavazafujiragizus.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085b15754e53---72848195121.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/73d24d35830a1a8040ef56d25ddc38fb/risurowuriwetipe.pdfIn PDF document text
    • https://ewdel.cz/ckfinder/userfiles/files/73263819081.pdfIn PDF document text
    • http://stevis.cz/files/file/lumewirimosudijobanutolo.pdfIn PDF document text
    • http://inistor.com/ufiles/files/dubofukapigamopukefe.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf84c8f08b---muzatepurobojo.pdfIn PDF document text
    • http://sochi-polyana.com/ckfinder/userfiles/files/77158672743.pdfIn PDF document text
    • http://playfromhome.org/clients/4/49/49939bf6a151252ba1adfe53d1befa29/File/51869722314.pdfIn PDF document text
    • https://edcasys.com/ci/userfiles/files/46253977616.pdfIn PDF document text
    • https://sardavetri.it/userfiles/file/32580299765.pdfIn PDF document text
    • http://lhsclassof1971.com/clients/74120/File/kogaf.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/deae8349c7a32081f4b059dcf83b75ff/63001837569.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/44921100267.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b9aab493a90b634f5e06a1fb44b2f5f0/penevarewugitel.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/8df5fd8f586a3210b962b36fc0b23d8b/15302617588.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16080f7eb8855e---zobusudiv.pdfIn PDF document text
    • http://americandeliorder.com/uploads/files/basumisetabatopev.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a5ad311966---62309495766.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/lirinale.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820fc047314---53659890666.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae2c102a282---wowajokoxadupimavi.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073cce16bb40---9756111527.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16070385e2ae03---rewuzujekumovetaja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=the+power+of+your+subconscious+mind+book+pdfPDF 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_off0000d2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DF 11076 bytes
SHA-256: 1f2df9af790ecf9bbf7c5bedc99a01c5e08321585c4a9d7acaccfbdaefce77c4
font_01_sfnt_off0000ec55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC55 17048 bytes
SHA-256: e69d084130ec3abc513d279b779daeb79ecdb2bf592e5649b40bc8f8b03eab53
font_02_sfnt_off0001187c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1187C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1