Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ac713b2fa0e03a…

MALICIOUS

PDF

84.7 KB Created: 2021-07-07 18:21:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: fd46696a216a999c2b4a8fb1c7458505 SHA-1: bb368210249922bc2566d8e715fd4c759f0086fe SHA-256: d4ac713b2fa0e03a334f259fc9b2e7c25549739f495d7fb4045dc5b28e979738
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains a link farm pointing to multiple compromised websites, likely intended to host phishing content or further malware. The presence of numerous links on disposable hosting and compromised CMS uploads indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://rford67613.com/clients/a/a2/a20594cba7d6fe247bc87ef9b80620db/File/natunowepufukomeja.pdf In PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f14ab0e418---bezekudapifoxulani.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/bajopol.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/b92999b545048c69b7d99221a657d1c4/42467264094.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609eed5691797---16660896748.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/nuxafipamewazebelazu.pdfIn PDF document text
    • http://restravel.ru/ckfinder/userfiles/files/jisine.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/mncb8kk4ood0vkt901h466ra1q/wukisalanuxegobuwujo.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16083f786e2d85---divogapimude.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160729e4467cfb---81128875799.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/seperafituwajori.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/jb8fbb7ji03gdtpd3c290gqas3/fulumi.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16089cdba49c48---4769485006.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/nobuxez.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/d6if6mbumqtlcl52c5d74he7m4/wajiza.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/bogizibubumumamafax.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076e53fb88e0---tuxisufikowanu.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/wavetexivepuvavo.pdfIn PDF document text
    • https://go2germany.ru/files/file/vurunamasese.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/90br2gdgeu2imugmnhf35tmsfk/69696778468.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/1ab262159ccb219a4d35245d0009be49/waloduwozogopuxugutatik.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=how+to+make+your+snap+story+privatePDF 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_off0000e74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF63 10816 bytes
SHA-256: 9e4c0caf2b989a1f8d13ac9ea2db29baed3b17fe5d9f708949bd5a9dbc408b99
font_02_sfnt_off00011860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11860 16808 bytes
SHA-256: 0d83b2e575df3a733340906fd3fea573015460ea4e7ed0d4d32e577597d2ebbc

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