Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aacd2d4fae1211d…

MALICIOUS

PDF

74.1 KB Created: 2021-09-03 16:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1e845f41b9b9249980f36d1d3f7d4943 SHA-1: c6f2ce01f1c6479242adbf5526caa72b554d9a8e SHA-256: 2aacd2d4fae1211ddc15c0a74bb2ad64b40075e322729364d8b9ffa522896b25
164 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, directing users to multiple URLs hosted on compromised CMS platforms. The presence of numerous links and the use of compromised hosting suggest an attempt to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/f4c89628107ea20fb40297cdc540f9df/94643459230.pdf In PDF document text
    • http://hyeminshop.com/DATA/files/sixemabadozumujexexu.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16079650c56605---14458647663.pdfIn PDF document text
    • http://mfo-fond.ru/ckeditor/ckfinder/userfiles/Images/files/fedinumefijidopigerepe.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/53544b1354f6c2e5a5f619db00790a8e/53951892118.pdfIn PDF document text
    • http://wjcopy.com/upload/files/27360732890.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/22696535837.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/0ef02ffab20459941c474a8d3e685d63/88873279045.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091a4ae08791---gozasusaxizumetokati.pdfIn PDF document text
    • http://tfforming.ru/d/files/58948900682.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/2b033653d3a3097e5dfb172461d167cb/29038469364.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/3gn60826r4k18a7hmiva5sg8tt/zafozun.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/0b52e33e6a730ce87de6a0dd9addf624/4129081739.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/28b1s8lqaca3opcirdstvsa5u2/ribunibuvunirakuxusofedub.pdfIn PDF document text
    • http://likuidart.com/files/ckeditor/files/21181678089.pdfIn PDF document text
    • http://diamondsnspurs.com/clients/12200/File/66579924159.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/lapag.pdfIn PDF document text
    • http://henghuitong.com/jingkelun/userfiles/files/20210813234604.pdfIn PDF document text
    • http://innotack.com/userfiles/files/76346236255.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160967ce9026ce---nolifosesej.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16089142334aea---pulufinure.pdfIn PDF document text
    • https://coimbatorepressclub.com/FCKeditor/userfiles/file/94390851341.pdfIn PDF document text
    • https://xaydungdonggia.com/app/webroot/files/images/pages/files/48881644349.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=jockstrap+sewing+pattern+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_off0000bd7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD7A 10920 bytes
SHA-256: 985b07b3d4193dee489cf49c8772172fd65b86ad4bcd9e0ee5957590d967561b
font_01_sfnt_off0000d6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000eee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE4 17192 bytes
SHA-256: 6af92ae1523041e31f13cb5e63f24087a23efb8f4b9dd102d1c23b0d36ed8146

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