Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c4a6a08295756f6…

MALICIOUS

PDF

106.6 KB Created: 2021-07-03 20:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: bd9190dc17ad8aeb75469023885ef6dd SHA-1: 614bec763e4ee60ef27af1cbc03c0ecd78ae80aa SHA-256: 3c4a6a08295756f682348e53c712e6634b8a49dd90a658b4d29835c7c317c4cc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9882

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://davcpundri.com/css/file/ragoxigejiromikanew.pdf In PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/2cchqquvpr1frlfah3f226bf75/xibijaxebuxodumarudunusaz.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd9fca927fe---bapewawusesukezefuzof.pdfIn PDF document text
    • http://thangmayedex.com/webroot/img/files/8059497715.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/8u3kgg57q2vqnb2rabat8gp9mn/61872315862.pdfIn PDF document text
    • http://tafgambiatours.com/userfiles/file/68718021012.pdfIn PDF document text
    • http://prestopc.it/upload/file/74934997929.pdfIn PDF document text
    • http://crabandclaw.com/uploads/files/bimemamuf.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/1s4b0sdcisnvdn9gqdqd0rqge9/pofugupolisajixarag.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/1b8457e51f9a8718b226ac71abf0051e/29962454045.pdfIn PDF document text
    • https://emilline.dk/ckfinder/userfiles/files/riziwonojeximizudin.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b6653a8da64---guseboxekexevafakejafami.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/sr5pfe911he91bjdf4v3mm3pj1/jebusutiw.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/badalivub.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160adb2c913424---26657125222.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/46428569590.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/8b822fcb10d1368258724eac01aa82cd/22449022304.pdfIn PDF document text
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/22c850b11c75edbc250577ca1cb64969/vidulafojovixebixit.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aae10c0e554---fejoliloka.pdfIn PDF document text
    • https://carlojans.com/cms/file/julevosotusunisebumovowuk.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/lekosemobitogemam.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/0401fdeecec304b63dc4ad028f287591/98942356402.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/nujomudum.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=the+curious+incident+of+the+dog+in+the+night+by+mark+haddon+pdf+free+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11932 11564 bytes
SHA-256: 49b2d0d30698b9ab96e650562692f7714b59c59a78aae4c401e38fbfdc48784e
font_01_sfnt_off0001341c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1341C 17304 bytes
SHA-256: 7cca0679b75a1395ecb286e7e604e3a192a46e5eed600c917d6ece3d74fcbb6a
font_02_sfnt_off00014df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DF2 21996 bytes
SHA-256: 018d89131c0dc236bc078872b72795c4b9d5c2cba0d624bf82c007ba0ef29e57
font_03_sfnt_off000184c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.