Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1269c0c76ca4e0…

MALICIOUS

PDF

102.7 KB Created: 2021-09-04 04:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 531909306fb51caa170621defd6b175d SHA-1: c44d9ca5e667e0f4a30722efeb03c0970ea71729 SHA-256: 0c1269c0c76ca4e0e8782b548d3940f5c7ffeaed7740e54fe57d98df85a289fa
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3064

Heuristics 5

  • 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
  • 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://gencerenerji.com/resimler/files/72531466233.pdf In PDF document text
    • http://cuanhomkinhtoanthang.com/media/file/71645108669.pdfIn PDF document text
    • http://e-skala.pl/userfiles/file/sotiridogopijazenadu.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/lopogevakulunadodinavuli.pdfIn PDF document text
    • http://sakesushilakehavasu.com/uploads/files/gokixirebazegupu.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/ob43jnbc5voav4hu8k3h0pj3dj/sigivufodavovevuxunebilav.pdfIn PDF document text
    • http://salkim.com/userfiles/file/51505695144.pdfIn PDF document text
    • https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/14136900755.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/kozalitugatepifi.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/15908395732.pdfIn PDF document text
    • http://caratow.nl/userfiles/file/wegojozutozoliwalab.pdfIn PDF document text
    • https://marljivo.hr/userfiles/file/begesapezi.pdfIn PDF document text
    • https://sharenkon.com/files/josixebiro.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/polupopodotere.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/01573116edbe99813773d73acc8422d9/5330587530.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/2301109347.pdfIn PDF document text
    • http://insidethedigitaltrend.biz/userfiles/file/minutafinojow.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/089e0e77fc16abb2225bb9f4785440bf/66726327496.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161272d2bd0b6e---25328214412.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a346c242f8---nazefazofikos.pdfIn PDF document text
    • http://gsxr.hu/userfiles/file/45644509250.pdfIn PDF document text
    • https://mimpishiosatu.com/contents/files/64466506786.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=descargar+conversaciones+con+dios+pdfPDF link annotation
    • 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_off00013d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D91 18432 bytes
SHA-256: 3fdcc370010c76ceb1130a747bfda0b0a4d8ef7757245b3136785e0d422f1019
font_01_sfnt_off00016cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CCA 10720 bytes
SHA-256: 188137f59e9fbec8376d40ed535f3838d6f215f82c12ca6a647648e02a394c01
font_02_sfnt_off0001855b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1855B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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