Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5d68b9e7d97dc6…

MALICIOUS

PDF

89.4 KB Created: 2021-08-25 16:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 8a2bf590ffc0943393945f0b782c9bf2 SHA-1: b7554302a16163bea0b38fc51f8e15741aed8e0a SHA-256: fa5d68b9e7d97dc612b1542327e4adbcbfc0c417e94e36163dc8a343ae434ace
204 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing or trojan delivery mechanism. It contains multiple links to external PDFs hosted on compromised or disposable domains, suggesting a lure to download further malicious content. The presence of 'invoice' and 'password-protected archive' lures reinforces the intent to trick users into interacting with malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://gjbbang.com/userData/board/file/rananizuzav.pdf In PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/9f61572d8857494972241b291e318b0b/korovabunepinila.pdfIn PDF document text
    • http://vuatoyen.com/uploads/userfiles/file/tisow.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/tbdp5eufrib322t0bq0a2s6kfr/79008343252.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/gdvff33fpgn9i3v53v2uunipue/jepipuvukifutaxatitewateb.pdfIn PDF document text
    • http://statewideroadservices.com/clients/879378/File/tukokopatabewowagisijeduv.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bfc4da0c4---45060745616.pdfIn PDF document text
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/cf0ec99450862f4123b5f9767c33fa7e/42881547302.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/60173270842.pdfIn PDF document text
    • http://studioguagnoni.it/userfiles/files/32366607618.pdfIn PDF document text
    • http://letsbelegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pavivawomiz.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/13791322306aac55fec65b3640b951d3/sivevasepam.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1607e05ec8aca9---50636929361.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a4de672b9c3---24228055556.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/2a4c8e2ab96ba8efa7fd3ab706ded33d/paponekigowejapo.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/23648bbf84b3a08dbb90abe04f5aabc0/zobeninazilamij.pdfIn PDF document text
    • https://pediatricpotentialsnj.com/PP/PPpng/files/gabowonogofirewava.pdfIn PDF document text
    • http://southfieldhigh1973.com/clients/2/27/27a5067865c8334ad4a5a1fd7642c928/File/61732295067.pdfIn PDF document text
    • http://lor-rostov.su/userfiles/files/bafopomufagijuteviposoxim.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/207ace40d176e2a53b0f2337adb25117/25572656191.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16084c62376aad---10152045362.pdfIn PDF document text
    • http://uspeh-kursk.ru/ckfinder/userfiles/files/4617152493.pdfIn PDF document text
    • http://wohingltd.com/userfiles/49442619371.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfe2bb977de---zununibapinoxowalu.pdfIn PDF document text
    • http://exito-opakowania.pl/userfiles/file/99337554262.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=attached+herewith+meaningPDF 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_off0000f749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF749 10548 bytes
SHA-256: ed0cde9c336638a82c1fe095de82b26fcd19302bbb35188c1ae91ceb25d697da
font_01_sfnt_off00010f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F00 19304 bytes
SHA-256: f6e8bac501031e21ee87cc120d347ab162c31453d0480b70253daf8982df2e96
font_02_sfnt_off00014055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14055 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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