Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ae18135292f890…

MALICIOUS

PDF

66.7 KB Created: 2021-02-24 18:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 770071fbd46f3b65f69d847a78424afb SHA-1: f20eef9187604a1f7cbb128c7be925b42c49a63a SHA-256: 75ae18135292f890c7ad708104a9d8bd2c9ed78658dee38eaece02ee1446269c
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=chinese+restaurant+amityville In PDF document text
    • https://cdn-cms.f-static.net/uploads/4487632/normal_600bc49a8e8a8.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/craftsman_5_hp_chipper_shredder_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500430/normal_601d3af68b877.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/rope_knots_for_mountain_climbing.pdfIn PDF document text
    • http://topdouche.xyz/83423046411pwlc0.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/70012470667.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476147/normal_5ffd17b728840.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faxiruvud.myartsonline.com/40260529865.pdfIn PDF document text
    • http://ripifozuj.rf.gd/73530412084.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/20409433040.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/american_cursive_handwriting.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/bleacher_report_champions_league_draw.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/software_configuration_management_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/mafikizolo_akanamali_song.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_off0000c9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AA 4992 bytes
SHA-256: a68e15cf28d601736f0d2a246fc3fd67d6822f461ec5ab7e3c93a3b354a384da
font_01_sfnt_off0000da7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7B 10448 bytes
SHA-256: ff54fe3e4b538be81894762edbc6f9081bbc704e00e5827b3b5d3e264529476b