Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e458cf8ab1479c0…

MALICIOUS

PDF

66.7 KB Created: 2021-02-19 11:46:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 22801d522c9d82a2805cdd54dccb1477 SHA-1: a0835ca91f7bff7d0796833bade4d9ceea9b2be7 SHA-256: 0e458cf8ab1479c0f82eae85f226fb62d2119d94fbd0d47d508deef15fc3fa10
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=meadowbrook+high+school+phone+number PDF link annotation
    • http://gimakelodikovij.iblogger.org/leatherworking_guide_tbc.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/dhhibhd/80717949942.pdfIn PDF document text
    • https://cdn.sqhk.co/xederebat/l65kicG/87847100959.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/Qja2r62/18725803636.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386837/normal_5fcf22e174507.pdfIn PDF document text
    • https://cdn.sqhk.co/makulowujip/bbQusfB/make_a_list_of_prime_numbers_python.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374373/normal_600d6c1f78921.pdfIn PDF document text
    • https://cdn.sqhk.co/pobusafi/ihhgepo/alchemy_1000_combinations_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/e34Ogd4/mcps_portal_parentvue.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/ehaylgg/rojufekuroxizolobomababa.pdfIn PDF document text
    • https://cdn.sqhk.co/tojofelekob/ZnhcNY4/ice_cream_near_me_vegan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454040/normal_6003e0487f99e.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/b2Zjhhj/red_lobster_specials_wednesday.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nunevubedodunu.rf.gd/landforms_all_around_the_world.pdfIn PDF document text
    • http://mefomoximene.rf.gd/90339761120.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_off0000c797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC797 5788 bytes
SHA-256: 46167ef10b1f2de09474ba1149ec31132859a5a4337b7d54be1082f2ec8fcdad
font_01_sfnt_off0000db43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB43 10112 bytes
SHA-256: c21550bede66c48937daf6e34f39b451c0c9aa603925da523ea8384017524cf0