Malicious PDF — malware analysis report

Static analysis result for SHA-256 85656eb462d4f7ce…

MALICIOUS

PDF

69.8 KB Created: 2021-02-16 10:42:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6c7a3fc60067cd8e8c0c3f872b377e0b SHA-1: b7820560146906bea6e7a277430199ac8b10fb56 SHA-256: 85656eb462d4f7cee2da4dbfcdac4ba290e5d837181d4e373375f8371e6590a4
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=invalid+left-hand+side+in+assignment+expression+jest PDF link annotation
    • http://mewajofoguwuz.iblogger.org/analog_clock_widget_android.pdfIn PDF document text
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/rinijeka.pdfIn PDF document text
    • https://kedumapeba.weebly.com/uploads/1/3/4/5/134593926/f3735b52ec10.pdfIn PDF document text
    • https://rawubewo.weebly.com/uploads/1/3/1/4/131405976/468814d1ddd80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423148/normal_5fec69550ab77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372983/normal_5fe7a5ee4b385.pdfIn PDF document text
    • https://bifukumuvu.weebly.com/uploads/1/3/5/3/135347201/wepidifibe_xogebupat_lipulujutibi_kaboditemavo.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/op1iihh/15976062775.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/mekonulegipero/aircheck_s_uk.pdfIn PDF document text
    • http://rexenejo.epizy.com/guild_wars_nightfall_guide.pdfIn PDF document text
    • http://tobewopuma.rf.gd/fnaf_2_toy_animatronics.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/dugujuvovazomu.pdfIn PDF document text
    • http://lerapavuzuloz.epizy.com/video_wallpaper_hd_apk.pdfIn PDF document text
    • http://katanitape.rf.gd/31792109678.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/jazuxumavovivorigemojo.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/detective_movies_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/kisosonat.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_off0000d227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD227 5628 bytes
SHA-256: a79096a2a944f73cb4fca1adc3e7a4bfc4e08df7b5f5ecd09e0751c1c6e3b4a5
font_01_sfnt_off0000e53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53C 10780 bytes
SHA-256: 5476c3345bc6d2710dd731bb56a1d4ccd295ffe640a681855eff1aa9340095fa