Malicious PDF — malware analysis report

Static analysis result for SHA-256 3079d49ae5f4abc9…

MALICIOUS

PDF

107.7 KB Created: 2021-08-16 01:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 99730f5eab76fc135ba435e4ce585100 SHA-1: 5982703587700e656204f431abd9870d2c7c6426 SHA-256: 3079d49ae5f4abc9167982978fc9f2dcedb8da5f8b823f70142ec91523fd8c09
204 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggests it's designed to exploit users. The 'Remote-support tool lure' heuristic indicates the document likely instructs the user to install or connect to a remote support tool, a common tactic for social engineering attacks to gain further access or deliver additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://laborke.ru/uplcv?utm_term=ejemplos+oraciones+coordinadas+subordinadas+y+yuxtapuestas PDF link annotation
    • http://domingo.hu/ckfinder/userfiles/files/95154291886.pdfIn PDF document text
    • http://446888.top/userfiles/file/silajaxexiluzixemelanavid.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/hrues3m2e0d3rpphm57qdco2r4/komepesixerupaf.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/84939329971.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/12aa1d60fbb819f26f065e3b4bbc73c2/jibanuduku.pdfIn PDF document text
    • https://eqonetech.com/upload/userfiles/files/45557622830.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/78522432492.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c27a753e1---9213009633.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1606cb3a96e198---xupubiminalojizanep.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608094422b775---86511767676.pdfIn PDF document text
    • http://www.sosonomo.com/ckfinder/userfiles/files/25908226423.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db6bc2118df---jaborivoxuzi.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16071bf1cad8f8---remodosivirakopogejade.pdfIn PDF document text
    • http://maduraicaterers.com/app/webroot/js/ckfinder/userfiles/files/rerewememisaxojolaropoku.pdfIn PDF document text
    • http://petukmahaaaraj.com/userfiles/file/jodoremevumojul.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/vivesodadagalafirel.pdfIn PDF document text
    • http://podhoru.cz/userfiles/file/10919750564.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/ad3812f55f6a9e2ff1109bc836b2b62e/89397370873.pdfIn PDF document text
    • http://ayurveda-shiatsu-nice.com/upload/files/pesipetediputuv.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/213c379f79bdb317a2339c28b8797d28/rokakinusuridepudo.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/68457232325.pdfIn PDF document text
    • http://icwest78.com/clients/67591/File/55806387954.pdfIn PDF document text
    • http://classicalgardenfountains.com/uplds/file/zuwumigovoka.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/7bd411ffdc5e951138ea89301d7214cc/80047928329.pdfIn 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://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_off00013bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BBE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000153d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153D5 11244 bytes
SHA-256: b96fe0a33a355f87c7df6a38116ba1243e35f17a2ec2dea9263afd2be853da08
font_02_sfnt_off00016dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DEC 18808 bytes
SHA-256: b101614938056b0e68b479caae9c672d692dd73d957060365b6d3a2f2ec02935

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