Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e1e919f1154c77…

MALICIOUS

PDF

67.9 KB Created: 2021-06-07 13:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3ee63d0a21dd9b75b04aa623d90f5e46 SHA-1: 7720834742584728c666cefb39845ed7c2d1cdd8 SHA-256: 03e1e919f1154c7778a268b2376d0f83d831c1b56493fa1a9b54471ba50afbb2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, with a primary URL pointing to a site offering movie downloads, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing campaign designed to trick users into downloading malicious files or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/pbw?utm_term=chhichhore+full+movie+download+tamilrockers+hd PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4468551/normal_5fcdf63e49738.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425759/normal_5fff56feee074.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421336/normal_603000a4b5f2d.pdfIn PDF document text
    • https://zowinalonewexaf.weebly.com/uploads/1/3/4/6/134680062/245577f0a20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449629/normal_602178b52fbac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494669/normal_605a5a37e8849.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424009/normal_6006aa15176b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490256/normal_6034d403296a8.pdfIn PDF document text
    • https://zotolujirerezo.weebly.com/uploads/1/3/4/5/134582396/kijolotuzivifabufir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wisarazed.pbworks.com/w/file/fetch/144729336/tawezoxelebixi.pdfIn PDF document text
    • http://mumubib.pbworks.com/f/niligixezomozanusixisan.pdfIn PDF document text
    • http://xibosini.pbworks.com/f/sufenubegerixukibo.pdfIn PDF document text
    • http://zusemivak.pbworks.com/f/how_to_use_kitchenaid_grater_attachment.pdfIn PDF document text
    • http://lomubel.pbworks.com/f/51180352657.pdfIn PDF document text
    • http://mujusevo.pbworks.com/w/file/fetch/144574755/fundamentos_de_enfermagem_-_potter_8_edio.pdfIn PDF document text
    • http://sozevupegufi.pbworks.com/f/fagafasom.pdfIn PDF document text
    • http://negovijalulu.pbworks.com/w/file/fetch/144412710/ejercicios_de_quimica_alcanos_alquenos_alquinos.pdfIn PDF document text
    • http://patimedudemu.pbworks.com/f/how_to_reset_casio_fx-9750gii.pdfIn PDF document text
    • http://bobiginokemo.pbworks.com/f/60186299699.pdfIn PDF document text
    • http://xanovobuxebo.pbworks.com/w/file/fetch/144792033/how_to_use_launch_creader_vii.pdfIn PDF document text
    • http://zawepiko.pbworks.com/f/zufogijakeruzupofun.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d91b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91B 5380 bytes
SHA-256: 3e18c2603b11cc452efaea89881f667b2509bece4709820bc841e4e4077d3fd7
font_01_sfnt_off0000eb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4D 10340 bytes
SHA-256: e0590998004ce9e8c8d5cdb6ce80c5e411c5f8d7a456f20db99f2542ad6fe331

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