Malicious PDF — malware analysis report

Static analysis result for SHA-256 a570197e9bc67bd5…

MALICIOUS

PDF

90.4 KB Created: 2021-09-01 02:26:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 691336a52f3f4b46e62a2c2f5372c332 SHA-1: c26efb648cf6ade7e067e6ace3e34adbb27042c6 SHA-256: a570197e9bc67bd5fb95366403f8b1c1a8754a0587545598b0f1f44830ab391f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to compromised WordPress sites and disposable hosting, suggesting a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 http://svatba-emi.com/uploads/pages/files/tulowiwimikajofilivujo.pdf In PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612ba5f36bcd5---5239337080.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608354f21a615---dopabasukasew.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/7f5463cf7057b7bec449736f11e9b2ae/rozifefev.pdfIn PDF document text
    • https://tabularasa.lv/sites/tabularasa/uploads/documents/files/tizavatepam.pdfIn PDF document text
    • http://bike-aholic.com/UserFiles/file/5852640343.pdfIn PDF document text
    • https://cailux.lu/userfiles/files/voxufisigurexupatenitojem.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/3b094311729f74f10329580d412685c4/wijoxe.pdfIn PDF document text
    • http://ricoconsultingattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pezinimibi.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a7c7b576e5---fosawelovumov.pdfIn PDF document text
    • https://zlataraburmevuckovic.com/files/56996186278.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf2ca7adeb---kiruwuwojababidivogovo.pdfIn PDF document text
    • http://xn--dlek-5qa.com/admin/UserFiles/file/88444897027.pdfIn PDF document text
    • http://it-hair.com/userfiles/44420140871.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/pibewogakajikufazaz.pdfIn PDF document text
    • http://www.rotudavid.com/ckfinder/userfiles/files/bufitovizuvogoj.pdfIn PDF document text
    • http://stonebreaker.at/gotiwosiwipabogufopop.pdfIn PDF document text
    • https://alteanetworks.fr/img/file/loluvegezidimeg.pdfIn PDF document text
    • https://torbay.ru/images/uploads/file/vajanimurunurojeliwe.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/vofixab.pdfIn PDF document text
    • http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/84294903605.pdfIn PDF document text
    • https://wodepcb.cn/uploadfiles/files/juxedixa.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/8cb42d012cb50850a95bbcf580bede8a/32207378563.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=items+you+never+knew+you+neededPDF link annotation
    • 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_off0000fe19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE19 17556 bytes
SHA-256: 813f656e77cc7a6be174b5c9dbdddb8ed3c4330e992a71676524abe8cabd825a
font_01_sfnt_off00012bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD7 10520 bytes
SHA-256: 641e183132dfdb1279c7d3532df2d0d614c116fb14c4210f095fb5c0efebbc3d
font_02_sfnt_off000143e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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