Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be9b8ad861817d0…

MALICIOUS

PDF

60.5 KB Created: 2021-02-20 00:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 591461698850abc40003cdb4c898c591 SHA-1: f196b408406a8f9d7c59c5e73376b3a6dc6429dd SHA-256: 5be9b8ad861817d0e473df23dadf73973d941dd6b9880077ca2ec42561896f20
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wb?keyword=vivofit%20jr%202%20won PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407303/normal_601b914d5ae42.pdfIn PDF document text
    • https://cdn.sqhk.co/bebetirifam/BGh1haH/spongebob_moves_in_mod_apk_v1._0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_600fc4e446052.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/jvSjejh/kevolilurusavufu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371524/normal_5fef730f7e9cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460457/normal_60198ad11b44b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378425/normal_603037fb48aaf.pdfIn PDF document text
    • http://fuposipavelolug.iblogger.org/fourth_grade_paragraph_writing_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/xfhgvjc/alienware_laptop_giveaway_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/Mxe1geb/champion_dual_fuel_generator_7000_costco.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/96157910410zwcqn.pdfIn PDF document text
    • https://cdn.sqhk.co/teganipuputu/1ji1fgQ/zepotiluzinalovevasika.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/Z2ojahj/download_apple_messages_for_windows.pdfIn PDF document text
    • https://cdn.sqhk.co/kitijorawul/cXhbrgI/pixel_starships_ship_builder.pdfIn PDF document text
    • https://cdn.sqhk.co/vagizabibo/zZrigEK/slingo_supreme_for_android.pdfIn PDF document text
    • https://jottigo.ru/wb?keyword=vivofit%20jr%202%20won't%20syncPDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB132 5096 bytes
SHA-256: cfc1f8baed6a360c468fcb04e355f05a49b076f43d6255af3237c44e67e19539
font_01_sfnt_off0000c2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C6 10112 bytes
SHA-256: 5a0caeb4b6498afe806c59c82f5a1e7fb15de92adf9ce599b1bf582cf265963c