Malicious PDF — malware analysis report

Static analysis result for SHA-256 96df62dfe56e2c14…

MALICIOUS

PDF

75.8 KB Created: 2021-02-07 17:02:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b97249badba00ac8c07203311d264d32 SHA-1: b15e0ce7899a9a26f6b2a6c1bb3c87439fa4d72d SHA-256: 96df62dfe56e2c1456f6853d9760e12fbee391a6dfa747852a2c250f9d1963fd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/aws?utm_term=papyrus+free+font PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413697/normal_600d122bf08a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459921/normal_5ffcf6c16b4a1.pdfIn PDF document text
    • http://g2am2e.xyz/the_future_of_humanity_michio_kakuvv81p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451355/normal_5fcf25e9bf357.pdfIn PDF document text
    • http://hightrade.club/example_of_past_continuous_tense_actxi9r9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391302/normal_5fe5599d211d9.pdfIn PDF document text
    • http://timelessdecorum.com/693760927195bitu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409095/normal_5fc6feaa8732b.pdfIn PDF document text
    • http://ig-supportcenter.xyz/zz_top_ringtones2tjax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456998/normal_5fc56c3ba40d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486742/normal_5fd33ef7159da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401714/normal_601eecfff1dd3.pdfIn PDF document text
    • http://creditreportusa.info/icao_convention_annex_94utea.pdfIn PDF document text
    • http://xplaintome.ru/41945905093ws8lo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/negonanopix/fikemelidat.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/platform_bed_kits.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/10463084594.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/android_tv_remote_keyboard_app.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9A 4968 bytes
SHA-256: 02589d734bc152e0e942c7f5575c13d9990f72ad421f84f5990a34b47dfa8e3a
font_01_sfnt_off0000fe98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE98 10600 bytes
SHA-256: 8df0993e024746dd1c7c54b7eff25a05b49c50661ba22d2f684970f26078faab