Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5b01f8c5e61a0a…

MALICIOUS

PDF

63.2 KB Created: 2021-02-22 20:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 52f893f05334b2aad0b0973f0287631a SHA-1: a590ae9bb573b5634485909f067d926612a8e450 SHA-256: 7b5b01f8c5e61a0a5a7441f854deafa4c3df8eab33ab943679f63dd6ef661fbc
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://jacksth.ru/wix?keyword=glencoe+math+grade+6+volume+2+answer+key PDF link annotation
    • https://cdn.sqhk.co/guwuweri/gagcZgd/47228973783.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493876/normal_602c9ed5cd4ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463300/normal_600a5742d364c.pdfIn PDF document text
    • https://cdn.sqhk.co/bafiweba/ahbvSji/negonowawutatiwuvumupabor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470703/normal_5fdfd5b6aa540.pdfIn PDF document text
    • http://byseles.xyz/899665678265h28o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427509/normal_600619c572a8a.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/ic8kidT/sotikijurev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499673/normal_5fe05a7f9b91e.pdfIn PDF document text
    • http://oneitstore.info/gudetama_tamagotchi_guide8q929.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/fusidejebi/automatismo_cardiaco_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/project_earned_value_analysis_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/jira_dashboard_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/english_speaking_lessons_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/gomuguwusumafujuran.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_off0000b9f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F3 5988 bytes
SHA-256: 671dcb02ef388fe4ea2c389b6e6432f1f73cb260bd1f1cfedacaffac91e7fbf2
font_01_sfnt_off0000ce48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE48 9668 bytes
SHA-256: 238189128714e96bd4af188cff5765dc8878d18009b61361e546f77a2d70d600