Malicious PDF — malware analysis report

Static analysis result for SHA-256 00837baa06009016…

MALICIOUS

PDF

93.2 KB Created: 2021-09-06 19:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 28d1d132e47a4922e8f1f22ddc0eeec8 SHA-1: 0474d0b65ec2874d5944b2bc20a5706ebbdb049a SHA-256: 00837baa0600901669657664ee53c109616357fe61e73d4ed25651e4b1d23729
124 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised WordPress sites and other potentially malicious PDF files. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malicious intent. The file's structure and the nature of the URLs indicate it's designed to lure users into clicking links that likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4497

Heuristics 5

  • 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
  • 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://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf6e574e6fc---xinekalujitufodik.pdf In PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/232081d23b0728fd515ff47324009a12/62929767438.pdfIn PDF document text
    • http://stagelight.pl/userfiles/files/45819520609.pdfIn PDF document text
    • https://areicon.com/images/file/tisevefuwisixixijarefuluj.pdfIn PDF document text
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/0cd4ae04f088ec648bc8ea67ccd37074/dokaxexabivunuzodiwufewur.pdfIn PDF document text
    • http://montagnobozzone.it/userfiles/files/70195002070.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/53430220644.pdfIn PDF document text
    • http://huiking.cn/uploads/file/080033242204.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9d12049d8---17554082756.pdfIn PDF document text
    • http://samsung-service-center.ru/uploads/files/nuzozifopana.pdfIn PDF document text
    • https://securityguardsupply.com/php/uploads/file/fakorajefe.pdfIn PDF document text
    • http://www.tekkoo.net/images/library/File/fazefolelisugijasu.pdfIn PDF document text
    • http://homenet-spb.ru/userfiles/file/91011301368.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4127eea4c6---3103122777.pdfIn PDF document text
    • http://www.ferm-matic.fr/upload/file/tuwana.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072bcb9afc03---14626649553.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=livro+de+anatomia+para+colorir+pdf+gratisPDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001130b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130B 10984 bytes
SHA-256: a5ddd6af9cdb88be8045709d36aba7b72f8d7981e64c57c3a26bde498416a564
font_01_sfnt_off00012c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C57 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14469 22020 bytes
SHA-256: c38e65a87b892e1b72fab755ca57e919b40f126bfc3a3414b5e238f8db66c3bf

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