Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b0476514a876a3…

MALICIOUS

PDF

89.5 KB Created: 2021-06-09 16:35:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 739e3751924a0f2870e9a099388c83e4 SHA-1: fe9c9216e84dce95148da56e44ea0dd73620522a SHA-256: 60b0476514a876a3546b34e219dd7dcc44ec80205dcf66bc1d6b9193108fbd73
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or a trojan payload. The document body text, though heavily obfuscated, appears to be a lure for a PDF download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://medvor.ru/uplcv?utm_term=bhagavad+gita+in+odia+pdf+download PDF link annotation
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/i3cv1kgccps8086v5ucrjqcror/36007534880.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/98996133373.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/fj13edsu55jcng01lgs4pc7kvs/ronojawofebidiza.pdfIn PDF document text
    • https://luminex.pl/upload/file/nenobotowudesebovadixefel.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/aht22svhoodg7onueios1a5tu5/2196074664.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/c376f5375b869cfc7f77a13abd6df963/92278061622.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/9eb6fee7ee3ce494bb4c33c195ff3224/73666367456.pdfIn PDF document text
    • http://arslanemlak.come/file/gubilomipexexoxisi.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/ac50g82fu5qjj2h5dnl6v8t32l/fuvakitapebo.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16094d4cfea5b8---63076672594.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/kigovarunuxo.pdfIn PDF document text
    • http://cokhixnktientien.com/Images_upload/files/kunupikalomijederojafe.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609003e9694d5---47130078844.pdfIn PDF document text
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eac8acadab---32708585187.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA0 6588 bytes
SHA-256: c6acebe3750ab55c09714fa1b34f6c70ddae3ce202e1a088ffcbc34adab53285
font_01_sfnt_off0000fd1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1A 5228 bytes
SHA-256: e43cd6ba5745578546dfaa610e8d86c6970fb8b59d70f2c8a675ab1aea5d2ed7
font_02_sfnt_off00010efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFD 2188 bytes
SHA-256: b672ed32057b611730be586441f877a1b206a236b78c91f14c1564547a1c78c7
font_03_sfnt_off00011904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11904 11532 bytes
SHA-256: 8b3db7de9fb8a30ed114307a02735d1b0ec3c19229574f31cf7753f9283bde88
font_04_sfnt_off00013f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F3F 17136 bytes
SHA-256: aff9ab6ae0e108b0325ddbfe9ca134227fa30960e75f361176103c5ca8a8c5c5

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