Malicious PDF — malware analysis report

Static analysis result for SHA-256 67fff4ce2dcde4bf…

MALICIOUS

PDF

87.6 KB Created: 2021-08-20 20:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0e2ef437b8d29bd4ca92e2b7ed9f3319 SHA-1: 64dd9f6bdb9bdca553888a6741b0966b69f43c5b SHA-256: 67fff4ce2dcde4bfe099457cbab6ddf4ecdf69afcdaee82bf0a266a5f2da2618
196 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan delivery mechanism. The 'Remote-support tool lure' heuristic indicates the document likely instructs the user to install or connect with remote-support software, a common tactic for social engineering. While no scripts were explicitly extracted, the presence of numerous embedded URLs pointing to potentially compromised or disposable hosting suggests an attempt to redirect the user to malicious content or download further payloads. The ClamAV detection further solidifies the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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 http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16077941ae522e---50613431706.pdf In PDF document text
    • http://abwingssuffolk1.com/uploads/files/18645026023.pdfIn PDF document text
    • http://khodahoanglang.com/admin/webroot/upload/image/files/mukenoponofivesuvufal.pdfIn PDF document text
    • http://rioairporttransfer.com/ckfinder/userfiles/files/pegazufi.pdfIn PDF document text
    • http://foodzipo.com/uploads/userfiles/files/87012145471.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083030fbe6cb---95057131861.pdfIn PDF document text
    • http://idroter.org/userfiles/files/91853825963.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c03040d371---11184180118.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/tamatinomomal.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c111b4bcce1---mavajexasofimepet.pdfIn PDF document text
    • http://denis-lefebvre-services.com/fichiers/file/72603686885.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210607140800268.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c27960ca0d---padew.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/5daee4b334206165f81a690dafa624c9/fakigora.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/u518o50jc5oa6imdjr453uut31/43053084440.pdfIn PDF document text
    • http://www.radanhorse.com/resource/files/bitamavaminip.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e3a2a697a5b---jeroxofa.pdfIn PDF document text
    • https://aradmissions.com/ci/userfiles/files/xuneberonixenetoxegar.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/lavalabove.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/28174853587.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/hq16oqfbeg5dm8rldv0udml5fp/9640793016.pdfIn PDF document text
    • https://kaemsp.org/upload/editor/file/3316394047.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f2b3d42ed---94712204885.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/3581aeb6d032e09bd8b8be0f1c0d3922/muzolari.pdfIn PDF document text
    • https://nepalipublisher.com/ckfinder/userfiles/files/verokomajewevaxugifodufi.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/67d032b36f64306505c7174149f4141b/89133181610.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090096552705---77184516371.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=b%E1%BB%99+ghost+win+7+32bit+%C4%91a+c%E1%BA%A5u+h%C3%ACnhPDF 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_off0000dea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA9 11576 bytes
SHA-256: e632de12a59e61affea902bcbd03b43adf2d12273f223ac07bcaa3ad73483b61
font_01_sfnt_off0000f97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97D 30492 bytes
SHA-256: 092ddcce8cbf3a1d6ace860b8bfd845cd44a25abfd96cb8b9bfc5dbfd7dab2eb
font_02_sfnt_off00013609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13609 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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