Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15c2a73463962a6…

MALICIOUS

PDF

73.6 KB Created: 2021-01-20 07:59:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b1338517e81cfe9449d9d78a11ecfe9f SHA-1: 374b58dcd7c0e5fd14e9e0f8b8a1cf58fd269e8e SHA-256: d15c2a73463962a6b8f1f7293025e29b727eea982791ac3a078546271e23bddb
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://jottigo.ru/wb?keyword=galaxy%20battleship%20free%20gift%20code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467927/normal_5fc3713d127c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383582/normal_5fde181e60a77.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hctgdEl/poggy_thorax_location.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/hg7NGhv/first_recharge_mobile_legends.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393364/normal_5fd81c7d28a17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421611/normal_5fc90120611c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377642/normal_5fab1fbe611aa.pdfIn PDF document text
    • https://cdn.sqhk.co/refevebux/ggqjiIC/detention_pond_design_spreadsheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409118/normal_5fa70300b96a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459641/normal_5fc82e46a0f7d.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/bPgitgf/world_top_10_unbelievable_battles.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/chgpRIn/33018402848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372080/normal_5f8a57ee050da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455907/normal_5fbd89c54c7c9.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/gewisetug/variable_frequency_drive_circuit_diagram.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_off0000e078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE078 5756 bytes
SHA-256: 992a60540bbafb99549229b04242ef6fcdd0f02c1174780feee680822468d5aa
font_01_sfnt_off0000f40b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40B 10996 bytes
SHA-256: 82a7be304ad0c6861c60925be8ec04605e0be6b8bf083c8b63da57c1ec7f5cea