Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67b115549b322cb…

MALICIOUS

PDF

95.3 KB Created: 2021-08-10 14:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 0223b70f1d6a5fb3385b50fe4c81839f SHA-1: a3531869373436f1b6e80c0f0cf81e16f89571fe SHA-256: e67b115549b322cb0ddd548dbc8483bc16cfc484aeae4f67189bf038b1c6bbdb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm designed to lead users to malicious content. The ML classifier and ClamAV detection strongly suggest a phishing or malware distribution intent. No scripts were extracted, but the structure and URL patterns are consistent with phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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://archism.ru/uplcv?utm_term=frigidaire+frost+free+commercial+freezer+manual PDF link annotation
    • http://langeline.com/ckeditor/upload/files/13116560702.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/40258168848.pdfIn PDF document text
    • https://www.oalysa.cz/ckfinder/userfiles/files/jenavaxeremifijoxewexi.pdfIn PDF document text
    • http://hitechdentalhouston.com/uploads/files/zokoxexigubatujodagipu.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088ded3ba9e5---89623656945.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/294326bd7b8446e891fe8a04bb0933e1/91838917528.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/lirivopisitozutefefu.pdfIn PDF document text
    • http://chhsclassof64.com/clients/b/b2/b21d6454c74b38f294a67049e63db9d7/File/20827066484.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083c8ab1bbf3---xodovemakodizotuke.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/77124713467.pdfIn PDF document text
    • http://iziusb.com/userfiles//file/vevipepadamivufuxap.pdfIn PDF document text
    • http://e-kva.ru/admin/ckfinder/userfiles/files/debaliguwejanuditifekise.pdfIn PDF document text
    • https://pecsikult.hu/files/file/31919802321.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/34910935989.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/16092af8de9578---wezotufevokerinep.pdfIn PDF document text
    • http://alt-1c.ru/userfiles/file/kebuj.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a04902878d4---65243090700.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b47c8f81c---jotojitirukewuw.pdfIn PDF document text
    • http://tensoinox.com/userfiles/files/nozigimeseru.pdfIn PDF document text
    • http://hainfelderteich.at/zenibogavetidaligupasox.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/3656831787.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/3292eb53057c1ffa434a563db8271b9b/sogukimagerokomuvus.pdfIn PDF document text
    • https://landatur.com/files/galeria/files/fulalusotanukalotati.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607918e63f8c7---25815197516.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c5071d60326---durebuwozuzubazulewa.pdfIn PDF document text
    • http://sherwoodonionfestival.com/ckfinder/userfiles/files/nunirozemen.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_off00011253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11253 10956 bytes
SHA-256: 655ab68ce217ae7be0899d0a4ebfc22f1891cdc9313b49df2e49c1bf1fb83c5c
font_01_sfnt_off00012b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B86 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14398 16676 bytes
SHA-256: a1288d5aa48cde3b8c1c1b747a5d5886be07ad0c2558e1c843039bb40364d5a7

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