Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0203b50abd56fc4…

MALICIOUS

PDF

83.4 KB Created: 2021-09-03 16:25:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ae1e5904e67c083a29bdc099380df069 SHA-1: f2e4937212698e5d2e9f9c1e7bd672c0b76ca883 SHA-256: f0203b50abd56fc49f2919904c85ce32d17a5e42a1dc5b003a6fc074cc5808fa
196 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a remote support tool lure. The document contains numerous links to external sites, many hosted on compromised WordPress installations or disposable domains, suggesting an attempt to redirect the user to malicious content or downloads. The presence of embedded URLs and the overall structure indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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 https://huntic.ru/uplcv?utm_term=robinson+crusoe+pdf+summary PDF link annotation
    • http://murphysbeads.com/clients/54316/File/metigatol.pdfIn PDF document text
    • http://drukarnia-warszawa.pl/pliki/file/reselulibow.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079fbad3c24b---jekiwegubirete.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/59279345658.pdfIn PDF document text
    • https://aodaixuan.vn/app/webroot/upload/image/files/59269535015.pdfIn PDF document text
    • http://liyangah.com/Upload/file/83813717344.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce0eec29698---pepozatebuxezobi.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/8d8fd8df818737d0378e52fbf60eb3ba/71775851113.pdfIn PDF document text
    • https://birutelorasin.com/contents//files/80936161000.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b907f37422d---wafixedifaluguzinij.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/zagusobobanazogojiropeni.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7f1f893c8---81729704211.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/49996290755.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/f2b123c7b3958d7e267be541a26778f0/koxurosatiwitepa.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/14113743139.pdfIn PDF document text
    • https://jiu-hang.com/upfiles/editor/files/58879850166.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/s71aasui9n3ugfhf20l4gjlu24/20761975041.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/verusikusalabipab.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/96783af4b13ae8ea8843c4fd09ae5fb9/dakaxisavaja.pdfIn PDF document text
    • http://burchiellati.com/file_fck/file/wazepikur.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/8372ea892be168c9c1dfab3fadf2cc20/13460241761.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/jbsqtq9dda2qf8l1va0g2l9jrj/72110302416.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/87aef61c8a2982e6f628fb88d0ceccd7/vojikazinopokasamulezu.pdfIn PDF document text
    • https://seerupit.dk/assens/file/1169528058.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_off0000e3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C8 11036 bytes
SHA-256: 64e44286dcd6ad9517c6e5d6fd1ff359cafdf3802b1a8c27298342aed341b7b8
font_01_sfnt_off0000fd45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD45 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11557 16644 bytes
SHA-256: 444e03a0e56332e9dbdcefa38c66e266da9a155aaccef5f6d68b6df99cbcddc0

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