Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4d7625693acd92a…

MALICIOUS

PDF

92.4 KB Created: 2021-08-14 19:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 2fe0f5334d287d1a9d304efeeddd8416 SHA-1: 0ccb679843351c8d96d1bd047693d229e82ea2c7 SHA-256: d4d7625693acd92a2a0d93eca8e74508805a6dba7d302ccfbc1901dc1d2be3f4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The presence of external URIs and link farm heuristics indicates a clear intent to redirect users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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://pixomot.ru/uplcv?utm_term=resumen+mito+de+la+caverna+de+platon PDF link annotation
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/97af9b49590a578e6ea5596dc58ecb6a/puvajotukoxusados.pdfIn PDF document text
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8aa7952b7---45471485096.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/39100704972.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/1508500226.pdfIn PDF document text
    • http://ukwoodrecycling.com/userfiles/files/soxubufomogoxuninuwamege.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/jabavupibolojiwobivisur.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160781eab78b61---24138677447.pdfIn PDF document text
    • https://rubenoferro.com/userfiles/file/boxuzenedixodifajube.pdfIn PDF document text
    • https://cochleartudaskozpont.hu/files/13434135300.pdfIn PDF document text
    • http://orderkai.com/uploads/files/zosowoxumusevog.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/dezamubopugedetajasuj.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/1998b099ffba17f41220e944554aafa7/1919029123.pdfIn PDF document text
    • http://arcstema.com/userfiles/files/tonefavexometufedis.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd5e52360fd---roxupipe.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160733c659a879---80810506686.pdfIn PDF document text
    • http://tai-yang.tw/taiyang/upload/file/2559541.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/webusekadirigire.pdfIn PDF document text
    • https://hojoairport.com/images/file/3412630219.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/820ccd15d7e524b248905a2d65a117ea/zevawa.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0b2c5467c5---52960846561.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/c379665340c7154b2d6c034a1c605003/23367664495.pdfIn PDF document text
    • https://securitydm.com/slicice/file/levamizezekipev.pdfIn PDF document text
    • https://mediaget.com/userfiles/files/99646436229.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_off000103e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E1 17876 bytes
SHA-256: bb1632571f19da3bc798e270fac492e99f27e1980bb9d93c0d7a9561059264f3
font_01_sfnt_off0001311d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1311D 10888 bytes
SHA-256: 833cda67dd8b7fa36e4d08c3e56cdf8fc7168af4ec678de1baa7940737b9ae4f
font_02_sfnt_off00014a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A51 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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