Malicious PDF — malware analysis report

Static analysis result for SHA-256 616b6e0449de9be4…

MALICIOUS

PDF

71.0 KB Created: 2021-02-19 00:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3bc5cd68473ffa5ccd167d0b0983e6f6 SHA-1: 570a949f5996223b9d7f85d9737c6b60f80446ea SHA-256: 616b6e0449de9be4f9e9995342e905759cd5d4e9fc10102d0753493bc0750d84
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/wix?keyword=premium+apk+reddit PDF link annotation
    • https://ludodufapagita.weebly.com/uploads/1/3/4/6/134616483/6469972.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fee02271020e.pdfIn PDF document text
    • https://cdn.sqhk.co/sexasegavon/gQLJoii/townsmen_6_free_mod.pdfIn PDF document text
    • https://bujasosepamus.weebly.com/uploads/1/3/4/6/134626994/xejonidebato_delalefibanuva_femodisopebo_jaxis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392442/normal_5ff68fb6a74a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420924/normal_5ff9053b1a98a.pdfIn PDF document text
    • https://cdn.sqhk.co/vapezuwe/fY77Fji/52077255832.pdfIn PDF document text
    • https://zejewovelopitut.weebly.com/uploads/1/3/0/8/130813539/7692860.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/fatisake/6858323259.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/pumegogixige.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/dibaz.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/61026421379.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/bojilamozapawapidexixumiw.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_off0000dac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC7 4960 bytes
SHA-256: 46c896390763d17cf6811ea2a50b55004a2f65de5d33e201926600011ee78d55
font_01_sfnt_off0000eb90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB90 10592 bytes
SHA-256: 9347439b4d3155ce1889d0f67ff0118ef23751ad3826a481331ec65328090322