Malicious PDF — malware analysis report

Static analysis result for SHA-256 be218191b3d1df9c…

MALICIOUS

PDF

72.0 KB Created: 2021-02-11 08:43:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 434339af1544647feacaa9673fd196d6 SHA-1: 1c26e1fe89ef91a8c4f05fa76ddf28ccdf80a3d6 SHA-256: be218191b3d1df9c6e7329a0eba67095f113738ff532e568bcf6e367ef47ff7a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wb?keyword=conventions%20in%20writing%20worksheets PDF link annotation
    • http://bevasesebesed.iblogger.org/89379809588.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/YX1Yf9n/nefukagodomogamoluwiku.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/agf38WP/fruit_ninja_classic_free_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/noligigibar/c77EZ41/54822298887.pdfIn PDF document text
    • https://cdn.sqhk.co/tizesefetus/hjejalu/violas_quest_marble_blast_bubble_shooter_arcade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413120/normal_5ffb12dd84854.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/SVzgjY7/45771493293.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/vudivuzakal/81285865754.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/zapizokaw.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/jijufefurumove.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/jukapajefosaxek.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/72867871950.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/jifuze.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/juwemoxifito.pdfIn PDF document text
    • http://wonetone.rf.gd/chillar_party_full_movie_openload.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_off0000de54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE54 4828 bytes
SHA-256: e12294bb64e778f69a7a97c0ca3710b3b74c529f0f784236e09c969f1219a07a
font_01_sfnt_off0000eed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED2 10584 bytes
SHA-256: 2bf24280843044d5ec48ddfad24252f0a76d392c8ec3745bb88857d63a9c4679