Malicious PDF — malware analysis report

Static analysis result for SHA-256 cac018493dc72862…

MALICIOUS

PDF

77.9 KB Created: 2021-06-09 23:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 6cdbbfb99862933f65be6d29bf035609 SHA-1: 7bfc1aa9fbd62481b29edbf7536f25b4ac650e2f SHA-256: cac018493dc728624adf9af38a7deda546150b0f2db94b7663c5b61a87738612
236 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains multiple links to external websites, including one disguised as a 'Gta 5 download' lure. The presence of heuristics indicating security bypass instructions and a password-protected archive lure suggests a phishing or malware distribution attempt. The embedded URLs and the nature of the heuristics strongly indicate this document is part of a phishing campaign designed to trick users into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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.
  • 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://drafthe.ru/uplcv?utm_term=gta+5+download+500mb PDF link annotation
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942761055b4---kajagebulitaz.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/7116247c459629765f8a3cf4b388f81d/nomuzalatuzeviwanuv.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/522931ec146f0543eb2e87b35429abd5/dunegevevaxexer.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd73a4cc0c---17696714832.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/65291603772.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/rp92oqm9q55too9ac90as92bf6/10006918397.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a437ff0461a---lageremabiberesimavudasu.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a4dfc86e1---namomagamubakolafojijol.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/36139535281.pdfIn PDF document text
    • https://ivanamihic.com//files/20216251863.pdfIn PDF document text
    • http://hyundailed.com/upload/editor/file/50191261424.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9ebb8204ba---sosenidakifonam.pdfIn PDF document text
    • http://agrobud.net/uploaded/file/57601622122.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/t70hsvhf5i4q5s676vp5ielv7m/59482846284.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aa390c884f---pelopowizukazut.pdfIn PDF document text
    • http://simonhoirup.dk/userfiles/file/lavizaxorabog.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/bb1f267dbfe2bb572f5d678d56d4b9a0/duzozuxuxizi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07F 5228 bytes
SHA-256: 2e2d98ac2cbe58dd8659b1825eb87569f0c34dcae9d190d512e26c0ab0d52fa9
font_01_sfnt_off00010251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10251 11896 bytes
SHA-256: d10bf4df46ed7eedb12748e22d71d2010d905bf30bc15eb889ba6288448a3c9e

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