Malicious PDF — malware analysis report

Static analysis result for SHA-256 e804f5507d081108…

MALICIOUS

PDF

77.0 KB Created: 2021-06-11 15:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 51ef8ecb9a9dbff9956f4c932d330d5f SHA-1: fac738ec9e7e8c46a0f4c85ac005f6933d277b79 SHA-256: e804f5507d08110829c3d5f684d6928e7fd9be719e5e80ddaec9fc5fe1fd95b4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm for phishing or malware distribution. The presence of 'john wick 3 subtitrat' in a URL indicates a lure to attract users. ClamAV and ML classifiers confirm its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nomylo.ru/uplcv?utm_term=john+wick+3+subtitrat PDF link annotation
    • http://lateonsettay-sachs.org/userfiles/file/48789722310.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078fbab2bfc4---38298182553.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/mixedediv.pdfIn PDF document text
    • https://matrainagycsalados.hu/userfiles/file/telorege.pdfIn PDF document text
    • https://gyandeepjkss.org/userfiles/file/fabotedupiforedelebem.pdfIn PDF document text
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/qs7t0s2g2srnnklijub0r9ac4a/giwebewesaxux.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/057e30ca1e900fc18ba85c4b4ef6b039/bujiduzufotemixem.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/2gdmuo0lrmn9defug7lu1eopc7/jawenasexaloxaro.pdfIn PDF document text
    • https://absolut-fit-and-dance.de/wp-content/plugins/super-forms/uploads/php/files/f29tjds8mo5mquvcm0ft3d4nth/34431411804.pdfIn PDF document text
    • http://momsystem.ru/public/file/sulezomijavafazipujurofi.pdfIn PDF document text
    • http://3q1p.com/upload/file/210611020846916579oaghe58b5nua.pdfIn PDF document text
    • https://tigercabinetry.com/wp-content/plugins/super-forms/uploads/php/files/df0ffda0104c6dd7bd8470fe38b5870e/sefavovelesatone.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/kajipafusolotujemanud.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3da13e9537---64863522206.pdfIn PDF document text
    • https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/b52beb8789f0dc0a121d36e2ef271b38/77578089671.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/2091e9477440417b4a2edbfbee49f3b6/xomisukiwawugofusizapimi.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_off0000ed12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED12 5304 bytes
SHA-256: 3b3eb4c2009c3d9397ab0406ee428e87681368b013bdad4bb472b67b5c40d7fb
font_01_sfnt_off0000ff26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF26 12252 bytes
SHA-256: a518bad61b52ffbb3bb4588625a2a8a7200d6e432439dfc93bc8e31a7ab35192