Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcea715d8f7dc0d0…

MALICIOUS

PDF

79.5 KB Created: 2021-09-24 11:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2746563f8018940757c52a3356004725 SHA-1: 772913c329fb3c471511b3b7ebdcaf408bf8c353 SHA-256: fcea715d8f7dc0d0f6539fdae78443d19dc8e1be223df89ac206bbb1be9cb255
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or are part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=xmen+first+class+full+movie+online+free PDF link annotation
    • http://vom-ragnaroek.de/uploads/file/24282625647.pdfIn PDF document text
    • https://olterus.org/contents/files/lafavufejevulutopibusagu.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/f1bfdddb1ce4db5e8509f9d353b428e4/dagowamumusof.pdfIn PDF document text
    • http://www.fonfe.com/uploads/files/80242704985.pdfIn PDF document text
    • https://nstyapi.com/resimler/files/45600382246.pdfIn PDF document text
    • https://alcoquimicos.com/ckfinder/userfiles/files/92828212189.pdfIn PDF document text
    • http://alotercuman.com/ckfinder/userfiles/files/ritixubupijovofeso.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/c3ce54b45a9878e3bd88afffca47d2d9/58916555602.pdfIn PDF document text
    • https://intrastorg.com/userfiles/file/23987267350.pdfIn PDF document text
    • http://accapierre.it/userfiles/files/76683983495.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142b43411297---fovowepiviwolirosaxarajip.pdfIn PDF document text
    • http://chetaomaynganhnhua.com/uploads/files/7635565000.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a30502bc95---wewuneti.pdfIn PDF document text
    • http://gugugroup.com/userfiles/xilesezabifipoxoxajupe.pdfIn PDF document text
    • http://autolavaggiocraparotta.it/userfiles/files/tudogo.pdfIn PDF document text
    • http://holidayservicemarsala.it/userfiles/files/92602795926.pdfIn PDF document text
    • http://heorungminhphat.com/luutru/files/46756692386.pdfIn PDF document text
    • https://ecoolteh.eu/galeria/file/33657252012.pdfIn PDF document text
    • https://deepex.hu/hirek/files/5911845536.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613b559d4f4e7---rokunipodup.pdfIn PDF document text
    • http://masterkontroll.hu/ckfinder/userfiles/files/41704807582.pdfIn PDF document text
    • http://www.groupementpecheduloir.com/ckfinder/userfiles/files/80502388592.pdfIn PDF document text
    • https://cncostruzioni.com/userfiles/file/31763086336.pdfIn PDF document text
    • https://www.babetravelling.com/ckfinder/userfiles2/files/33312401789.pdfIn PDF document text
    • https://kerryparsonsfoundation.org/media/file/fuvuxevutazu.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_off0000d1b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B7 10668 bytes
SHA-256: 90a952477baaba50f6c29edfbc5b7b20d497dd95cd8dbb7b5b2b272462636039
font_01_sfnt_off0000ea26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA26 17588 bytes
SHA-256: 2fd5a3070d33e59ebaabdacb0216037c1caf37b06624c2015622f16ad9582b7e
font_02_sfnt_off0001180d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1180D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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