Malicious PDF — malware analysis report

Static analysis result for SHA-256 47124a0421c7a65f…

MALICIOUS

PDF

68.8 KB Created: 2021-09-26 04:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: bfb5db3a4dc6b85729f07296d08389bc SHA-1: f8a6564d8d159298a0b3fef31bc95f86cae18aea SHA-256: 47124a0421c7a65ff4e07b403d716f46883c40ec29d46b2d9bcc748f258bf942
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of a 'gta v mobile game download' lure in one URL indicates a phishing or malware distribution attempt. ClamAV detection and ML classification further support its malicious nature, likely as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16131970831746---xaluregoxoruma.pdf In PDF document text
    • http://www.lukoilmarine.com/ckfinder/userfiles/files/jawinasezokimofemoweluwoj.pdfIn PDF document text
    • https://stabiactiv.com/userfiles/file/73471107017.pdfIn PDF document text
    • http://nigerseedindia.com/uploads/9070340577.pdfIn PDF document text
    • http://capitaldanceacademy.com/userfiles/files/jomeki.pdfIn PDF document text
    • https://wct.goldcrownresort.com/magazine_files/files/xojajivutaf.pdfIn PDF document text
    • http://web5gstore.com/Files/files/nejezitejabowuweruwab.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614668fb9d6c4---woroguvolumab.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1614644ed5ae29---sidodezazapetowiwisojak.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614def073b267---kitidi.pdfIn PDF document text
    • http://atel-j.nl/uploads/files/95679076582.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/162d3b8ad693ad1555a80de6c26843c5/49877974664.pdfIn PDF document text
    • http://keitbg.com/images/files/24113674886.pdfIn PDF document text
    • http://nusratali.com/userfiles/files/tokejo.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/62013164289.pdfIn PDF document text
    • http://be-now.pl/userfiles/file/73072919.pdfIn PDF document text
    • http://hamishehbaharcarpet.com/My_Project/Hamishe_bahar/ahar_img/files/vuwakidosugevolu.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16145548f7bc84---80189698034.pdfIn PDF document text
    • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/sedarebisibisokapamoju.pdfIn PDF document text
    • http://www.jfac.kr/ckfinder/userfiles/files/zitamebo.pdfIn PDF document text
    • http://around-sicily.net/userfiles/file/gulidinavodabamikejavede.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/kigakukasemakamusezag.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/161446b495c0ad---25943117186.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=gta+v+mobile+game+downloadPDF 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_off0000af77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78E 10656 bytes
SHA-256: c62f1822ee73c1af15e5146ffabfeac3d43e44d65bfd231673bdf199ccb50d65
font_02_sfnt_off0000dfc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC6 15688 bytes
SHA-256: 7e8cff51cbea9a29ef040db7f34bbd9ed0a4929b11de126082823a1c160c916a

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