Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b948c70ec8102db…

MALICIOUS

PDF

66.3 KB Created: 2021-02-24 01:47:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c09cd0c5d2c95d8367adc57accfda14d SHA-1: 2328aac7336b17d857a53367f27f8f094f59ac6c SHA-256: 8b948c70ec8102db5677641d2d2c1e9b13a0170a73363b7ad5c176c0adfe1f22
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://baarspo.ru/wix?keyword=rat+dissection+coloring+worksheet PDF link annotation
    • https://cdn.sqhk.co/pavetikedur/Ojehfhd/tiki_taka_barcelona_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451027/normal_601d8303d735b.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/9AEiZgh/7084997819.pdfIn PDF document text
    • https://cdn.sqhk.co/vivepovugeli/VigUght/69013989489.pdfIn PDF document text
    • http://sallely.xyz/how_much_is_a_galaxy_s9_worthqhsfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463286/normal_6032bdc581e23.pdfIn PDF document text
    • http://masterpowerpoint.com/cartoon_video_app_store_download0nx48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/debiwelof/acpi_sny5001_4_2c6a9ce5_0_driver.pdfIn PDF document text
    • http://pivujumurabaf.epizy.com/19719459483.pdfIn PDF document text
    • http://safatezep.epizy.com/22829760166.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/xodejopibageve.pdfIn PDF document text
    • http://jibejobumo.rf.gd/54595510573.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/world_economic_forum_global_competitiveness_report_philippines.pdfIn PDF document text
    • http://mexesumofiruvaf.rf.gd/nixijurizabekaxefakala.pdfIn PDF document text
    • http://demujub.rf.gd/nabotoluxodibeluwojowela.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/wumubutumosozosefedak.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB98F 5152 bytes
SHA-256: 7eebc85f577858f27f8c98706ba435cd3e730e3c56eadf1d89d26e122e50326d
font_01_sfnt_off0000cb1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1B 10188 bytes
SHA-256: 72b61705053c62a7e32fcff4714660c2680f09b670958cacd06cd07b8e648ead
font_02_sfnt_off0000edf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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