Malicious PDF — malware analysis report

Static analysis result for SHA-256 4516d6f87fa5f0f3…

MALICIOUS

PDF

72.2 KB Created: 2021-02-25 11:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ff86cc84c07a048efe8b101fee5f7065 SHA-1: 430ad51809a4e927fd19c97b2242c739e2b1178a SHA-256: 4516d6f87fa5f0f3c4e769eec4290cc245337fda0232dafafb6cbb7289f4f81c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/award?keyword=what+does+seasonal+employee+mean PDF link annotation
    • https://cdn.sqhk.co/lapitobexeva/VRQBp5R/mega_ramp_car_jumping_hack_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376606/normal_5fd8a1842f6d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450151/normal_5ff614fdc4f58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379842/normal_6015113ead461.pdfIn PDF document text
    • https://banatili.weebly.com/uploads/1/3/5/3/135314160/4285369.pdfIn PDF document text
    • http://bokugezus.66ghz.com/tefogigagotuvelobolavi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465539/normal_5fc79b6128423.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guxudapese.epizy.com/business_analyst_job_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/8092199349.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/nedazedefuz.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/beyblade_metal_fusion_game.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/annamayya_tamil_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/repap.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/tutodubefobo.pdfIn PDF document text
    • http://jiwenufaxo.epizy.com/bal_krishna_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/62256144741.pdfIn PDF document text
    • http://gewagopixinilu.rf.gd/electronic_bp_machine_vs_manual.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_off0000ddbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBD 5220 bytes
SHA-256: 3323e010d5a097f76dafe15dadb34aee95136e82085c94b3e31dd0dabae66e2e
font_01_sfnt_off0000ef6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6D 10484 bytes
SHA-256: e93f79fe5f6a3eb1d40936a84111c0387c7d4c20b20c16d6a3eccc737fb26c55