Malicious PDF — malware analysis report

Static analysis result for SHA-256 53e691e60640de5c…

MALICIOUS

PDF

83.3 KB Created: 2021-06-22 12:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cc638a9cab8fff92483e8e19751edd1d SHA-1: b06957433dff3c00f7a71252e48e9a2723e05f92 SHA-256: 53e691e60640de5c3081083adf9d2496cd088a551d87ac4513762ca3d3362c64
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document exhibits malicious characteristics, including a high ML classifier score and ClamAV detection as a phishing trojan. It contains numerous links to compromised websites and explicitly instructs the user to disable security software, indicating a clear intent to facilitate malware delivery. The presence of embedded URLs and the overall structure suggest it is designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/980g1ncmkn6ke1t59njkkllklt/4107901491.pdf In PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/labugev.pdfIn PDF document text
    • http://applexin.com/ttpsea/files/file/nikidodagizuguvinajejolis.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2303aafb7b72a9b4b50dfc7bcf8fcb65/kenosobex.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/191651c727c7471b3aa8f67e5b33f048/18119653603.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/2e36f30d14b1df6e335d5a0a36ada29d/wosonag.pdfIn PDF document text
    • http://ledson.ru/upload_picture/60598331774.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/rpqlnq41457kbc6g52nm43j6eq/25142336958.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/7d40c79cef185cb92e0081eb1875bd35/pujejikilemofo.pdfIn PDF document text
    • http://aj-logistics.com/stock/userfiles/file/jibirabunakikerukeziden.pdfIn PDF document text
    • http://shiokuda1.com/contents//files/78988732058.pdfIn PDF document text
    • http://mdbim.pl/ubezpiecz/obrazy/file/relugafe.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16079059268fef---37907069589.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd63fadbc3---66196958710.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/63435268761.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bb6bb8b0d52---25598374073.pdfIn PDF document text
    • https://burgas-remonti.com/userfiles/file/70955784891.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=download+hitman+blood+money+for+pc+32+bitPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B6 5848 bytes
SHA-256: 65183b494d1b6180bc1d8ac32a33bbb42a915dcbad7546eb5ef721d6ae46670c
font_01_sfnt_off00011890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11890 11704 bytes
SHA-256: adf38931609e95d572c841b26c0b1b55480fb4ca15edd75c025b42cc9064cfe1

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