Malicious PDF — malware analysis report

Static analysis result for SHA-256 026a2356e2599f40…

MALICIOUS

PDF

97.2 KB Created: 2021-07-09 17:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 344e5f9f054f02d003161f9e96be1292 SHA-1: 2ae50e02dd79c7986c0c07c1e5792c2da7e3104e SHA-256: 026a2356e2599f40140960c5adf79a7bf1515fbf2a76148459eefe9a6b8136ea
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to external sites, many hosted on compromised WordPress installations or disposable domains. These links are likely used to distribute phishing content or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9802

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://crewmak.ru/uplcv?utm_term=the+truth+untold+translation PDF link annotation
    • https://pelicanfinancialnetwork.com/ckfinder/userfiles/files/64878284039.pdfIn PDF document text
    • http://aldercrest.com/files/99461017916.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608df8b94049a---javubesesulowulolodekiwu.pdfIn PDF document text
    • http://3sdent.com/upload/files/25690227648.pdfIn PDF document text
    • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/garonudawesigoruju.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/kazebona.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/8cg45pj5gg663voebosmgdv115/6178803174.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/302003049231.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160da270bba01c---suxavizum.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b97c7743102---13044055856.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/16070013722d9c---wamusem.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607444fb714ac---tededowujupitekokavike.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f16cf0465---52551698587.pdfIn PDF document text
    • https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/70a015534946132227a8ac9f01bad2ef/75171948595.pdfIn PDF document text
    • https://avgdesign.com/userfiles/file/vibuwapoponapat.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/087e3067d05561c78730cd5415f22632/10207462577.pdfIn PDF document text
    • http://coytex.net//ckfinder/userfiles/files/zamusapazowese.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/5c9a1cfa802fb2ba83775d90eca88118/53626197724.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/8d02041qif8ueuah8on5dvc0fm/3556072290.pdfIn PDF document text
    • http://mchs67.com/clients/6/60/601da637195afcc8544498be66ee72b0/File/vikixokepakos.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/5d62407e1c1b625bca7548cb0024e25e/xifolegalanibetezukeramil.pdfIn PDF document text
    • https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/c988e7e90632961afd94d00a0fc09c0b/4314224314.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/83fe630685c5f851b68a68e04e1f37e7/38718850324.pdfIn PDF document text
    • https://chameleoncoupons.com/adgprocessing/uploads/files/sajusosulojub.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/d92d02b6ac768d8bf9b9d34cfcf8ccfc/45799972727.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE744 3032 bytes
SHA-256: 15db5f5230bdd76e9d511ed3d11dbdc543cc2fa7038636f5b8955f0a106ded92
font_01_sfnt_off0000f3ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBD 17288 bytes
SHA-256: dd77890637ffac0becc8c9766924c529cd33db86b0e8e6ba8c7936b5123eb9f0
font_03_sfnt_off000125d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125D4 20936 bytes
SHA-256: 45ac8b8a7fdce8051fc72b7f5cdb41253d7b238c7a7c04f051eceff28d9fcfef
font_04_sfnt_off00015ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CA5 10408 bytes
SHA-256: 5a9045aa740af778ce934616825a8a15f9d8192e171b0f0c415ca787b779bbd9

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