Malicious PDF — malware analysis report

Static analysis result for SHA-256 14fc9f42bc50bcd4…

MALICIOUS

PDF

75.7 KB Created: 2021-09-03 01:21:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 68b2db06f6c97a7cd9f299592467e3be SHA-1: 6863710d2e9960076ce146d0e1a6426d4dc78847 SHA-256: 14fc9f42bc50bcd47e6512cabdfc76d717eb8245178745497fe309ffd828560d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is often used to redirect users to malicious sites or download further payloads. Several heuristics indicate the PDF is part of a link farm hosted on compromised or disposable domains, suggesting a phishing or malware distribution campaign. The presence of a fake Starbucks application lure in the URL further supports a phishing intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a47037eec4e---58445036363.pdf In PDF document text
    • https://hosvagyok.hu/userfiles/file/59776145386.pdfIn PDF document text
    • http://prime42.ru/userfiles/files/91644490111.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ca382bbafe5---81403154926.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160795252ade88---69633645546.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-13/20210513143220817474.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/17458363397.pdfIn PDF document text
    • https://prokoncept.hu/admin/blogfck/image/file/31528359854.pdfIn PDF document text
    • http://mega.kz/media/upload/files/fexakomekibavezifa.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/98305342428.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a57f24646e---fanasok.pdfIn PDF document text
    • http://axwelindia.com/uploads/41791912972.pdfIn PDF document text
    • http://urgentcarepb.net/userfiles/file/90448619473.pdfIn PDF document text
    • https://andhimazhai.com/images/files/zupixutojujamitizebuzuzax.pdfIn PDF document text
    • http://mpu-beratung-brendle.de/userfiles/file/zugekebogap.pdfIn PDF document text
    • https://led7.ru/file/24335742639.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081cd2ed5d45---60616383768.pdfIn PDF document text
    • https://aviatroglo.fr/IMG/file/79122853369.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160909207e24b9---50608232603.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/9be3941b9b462ee576a0adf63c71baaf/56352170980.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b17da7ce70---sitikomizojowo.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/9054199185.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160860ff7e4907---mevemufirovidutawesojox.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa95840ece1---rolebifuzafiron.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b8fb4a3fa---gemubakaresilig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=starbucks+application+pdfPDF link annotation
    • https://grupo.iberia.com/js/ckfinder/userfiles/files/vefopan.pdfIn 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
    • 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_off0000c372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC372 10888 bytes
SHA-256: bfafe45faea9d5204f305894f85b1cf99a9548e8dc670ba9b7639ac51892f883
font_01_sfnt_off0000dc78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC78 17692 bytes
SHA-256: 2e5191a08150662fafc29e2554aeb5926f982b49d6ca661266c75cdca167c8f7
font_02_sfnt_off00010944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10944 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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