Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c2e4ece2de06c3…

MALICIOUS

PDF

82.9 KB Created: 2021-09-17 12:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0d2a158e497979ebb6b30b293633702b SHA-1: cdd52711ed0551ff54dc23b77425ea7bd9ae141d SHA-256: 50c2e4ece2de06c3c4d9b504aaeee4a8178c103b43ee8fd6ea5c78e694796a3d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to various domains, some of which are hosted on compromised WordPress sites. One URL specifically mentions 'download modern ops mod apk', suggesting a lure for users seeking software. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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 https://crewmak.ru/uplcv?utm_term=download+modern+ops+mod+apk PDF link annotation
    • http://cartopack.be/Images/file/76567757490.pdfIn PDF document text
    • https://bitree.ru/ckfinder/userfiles/files/fipafeworakodemavu.pdfIn PDF document text
    • https://gonguyenkhoi.vn/upload/files/sarelebakokonorosakemat.pdfIn PDF document text
    • http://www.azurwelcomeservices.com/userfiles/file/92202157053.pdfIn PDF document text
    • http://cosmik-kinoteatr.ru/sadm_files/12370926742.pdfIn PDF document text
    • http://nonstopsushi.com/uploads/files/66830379783.pdfIn PDF document text
    • http://iberryhomemade.com/userfiles/files/wizivuxuvapavib.pdfIn PDF document text
    • http://dongzzang.com/userfiles/file///surijofotetafekajum.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8bqk7c4fb0n9n5ups32qcabao6/36176985576.pdfIn PDF document text
    • http://cpviettin.com/upload/files/49466981151.pdfIn PDF document text
    • http://qhchemicalsfeed.com/upload/files/jiluxumogokalobelejuzu.pdfIn PDF document text
    • http://haliburtonhighlandsheritage.ca/userfiles/file/85242695622.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/a2a7mv775duouvopee3kq77tb4/masumiwari.pdfIn PDF document text
    • http://mitroc.com/userfiles/file/1338034289.pdfIn PDF document text
    • http://rideco.hu/upload/file/79663347291.pdfIn PDF document text
    • http://lse.hu/userfiles/file/76116839207.pdfIn PDF document text
    • http://chinalabware.es/d/files/81869720594.pdfIn PDF document text
    • http://crediramasrl.it/public/file/refib.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/nemobaguxanezot.pdfIn PDF document text
    • http://egyptlance.com/userfiles/file/92020308542.pdfIn PDF document text
    • https://scalper.ir/data/files/file/46124820989.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613b3112ec780---66342333897.pdfIn PDF document text
    • http://studiomontironi.eu/userfiles/files/89839530735.pdfIn PDF document text
    • https://izometal.net/mm/file/xilumevasaduj.pdfIn PDF document text
    • http://weforyou.it/userfiles/files/60635076675.pdfIn PDF document text
    • https://altinhediyeler.com/calisma2/files/uploads/kizifil.pdfIn PDF document text
    • https://greenlandpark.com/uploads/files/vibukozeka.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_off0000ded9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F0 10540 bytes
SHA-256: d9a840bc489d90bfef6841cb6b9d54a76c3a307c64f6aff0fad4427f8cdf3b2c
font_02_sfnt_off00010ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF1 17916 bytes
SHA-256: 21f5ce1a6d9f93699fb4727cc1158ccfea21189d9129e963e7b20aba0d547034

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