Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ca94b1580e484d…

MALICIOUS

PDF

81.9 KB Created: 2021-09-02 21:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9e4d7cf2c6ca6f9c9c5a4c8a24cf50c5 SHA-1: 4ef3d1436e712f7232d602f570c90a2e16913076 SHA-256: 14ca94b1580e484d04fe1f14b3da19edc0f486ab9dcd4550980415cba878557c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous external URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://medvor.ru/uplcv?utm_term=livre+d%27interpr%C3%A9tation+des+r%C3%AAves+pdf PDF link annotation
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/22d5bddae8675e3ac48c8c08ee0ec822/xebanifa.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160970300d39d5---48210069887.pdfIn PDF document text
    • http://www.fishandcosolicitors.com/uploads/files/43168374960.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-6-17/20210617154826993896.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b2dc0fe8c---87872261143.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/lekogije.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/fgln3lrf8g4vck328dtv4lh525/belagubuwiro.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/rtsi5ltgoos9esfd6eirsgkrj2/dezup.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/pifitedi.pdfIn PDF document text
    • http://linuxnewyork.com/draft/media//27127458889.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1fb667be04---kolinavixijunelutozonixek.pdfIn PDF document text
    • https://www.upperhousedev7.com/ckfinder/userfiles/files/renizidob.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adafa1c49c7---vamamonid.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1eea9a9ccc---jaguvawetalipikupi.pdfIn PDF document text
    • https://mimpiindah2.com/contents//files/92965083388.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16102ce8ef170d---pigikajana.pdfIn PDF document text
    • https://konzolstudio.ro/uploaded_files/file/tobif.pdfIn PDF document text
    • https://fulzugaskozpont.hu/files/kexenofolapab.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612387cb774c1---duxilebusegulanuwe.pdfIn PDF document text
    • http://seashoresilverlabradors.com/clients/4/48/482fd9669fb3260065120a60ccac5e48/File/25022403504.pdfIn PDF document text
    • http://pressvaluation.net/userfiles/file/manoz.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d9aa9ab9e71---99788866908.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_off0000d53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ed55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED55 10816 bytes
SHA-256: 547fcea1b8432913c5f2e875a6b15b316a8a7bb8d44ee7282196ce8b8a4adcac
font_02_sfnt_off000105c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C7 19856 bytes
SHA-256: 468bd6250e0d8e25f40e90c9598599d13135d694508286ea437e17eb64c90538

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