Malicious PDF — malware analysis report

Static analysis result for SHA-256 486ca88461b1f50b…

MALICIOUS

PDF

73.9 KB Created: 2021-01-25 14:51:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 39b9378b728db8991de28ff533767e77 SHA-1: 082f41cf53146ffec86ab5f86b5855f169586c08 SHA-256: 486ca88461b1f50b4b6d561e1896d096a9bef11dc31189bf8a003db0db592053
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://maypoin.ru/wb?keyword=lego%20temple%20escape%20review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370074/normal_5fc865a96a2e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480591/normal_6000136be3cca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_5fe83e4e8b76f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426828/normal_5fed77d6a5f71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421350/normal_600e267d10d0e.pdfIn PDF document text
    • https://cdn.sqhk.co/gokitoser/pwsighg/sepiketo.pdfIn PDF document text
    • https://cdn.sqhk.co/vagofedewat/aEC6Gii/obs_camera_controller.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472793/normal_5fc997d3c5f03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484122/normal_5fdd84e0a3593.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/jhhjhii/stokke_tripp_trapp_baby_set_cushion_instructions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391634/normal_5fdf3ca7f0552.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/kakekojezutok/58230643361.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/25540099814.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/autopsy_reports_public_record_pennsylvania.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/mahjong_titans_strategy_guide.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_off0000e4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FC 5348 bytes
SHA-256: 203b6a0c1300bc32b434c092f6324d46504869e8aef493c691652c554a35f833
font_01_sfnt_off0000f732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF732 10416 bytes
SHA-256: 9f366a517cc72247430e768f17865c640fda0393aa9c3cd7b94e3b3f54f52806