Malicious PDF — malware analysis report

Static analysis result for SHA-256 4670e24806190f23…

MALICIOUS

PDF

69.2 KB Created: 2021-02-19 20:45:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: eb10a2a2a980dde2b3f167f8a15341ff SHA-1: 0b3eacb1c024c14d805002f49f54ed80e6eb63da SHA-256: 4670e24806190f231080cf017356f155487d1bd990e71bc935334775693491f5
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://maypoin.ru/wb?keyword=ceremony%20leslie%20marmon%20silko%20audiobook%20free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376629/normal_601488df34fbd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403685/normal_600596214c74b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451229/normal_5fceb65f96006.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471475/normal_5fc5ae5da66e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484997/normal_60217b50e9dc2.pdfIn PDF document text
    • https://cdn.sqhk.co/savaketiju/hf9ifrf/nenaxepipi.pdfIn PDF document text
    • https://cdn.sqhk.co/vazoguzo/NKOERhd/american_civil_war_movies_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/xujurovemu/gcjeD1z/78376342008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497369/normal_601cb182315bb.pdfIn PDF document text
    • https://cdn.sqhk.co/fobonelaga/wRHA2gd/46803470730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501777/normal_60236aaf482ef.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/mukutud/zimowopi.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/86587455774.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/bottle_hang_tag_template.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/chrome_online_editor.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/teaching_cursive_writing_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/logo_quiz_answers_tech_category.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/tilipubavu.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_off0000d2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DB 5264 bytes
SHA-256: 7f2389dfe7ce95c507e981da668db23bfefebda56cc65cfa31861c1c4fd9ef14
font_01_sfnt_off0000e4ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AB 10376 bytes
SHA-256: f66b9f35ff57e4bfaac6fa45daf7256892c5d7a2e3b43835f93b1fa6cd6fdea6