Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b2dea5c9b488d2…

MALICIOUS

PDF

70.0 KB Created: 2021-03-01 17:36:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6011b82f1de643e12366ced9c1147d9f SHA-1: 6a092c6713d12ab53ee7d457a1f6b82c30423059 SHA-256: 00b2dea5c9b488d246bd3ebe331b691d5e98b67a3ccfd4c2f62e7d868aae57a5
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dafemum.ru/wix?keyword=lewis+structures+worksheet+answer+key In PDF document text
    • https://cdn-cms.f-static.net/uploads/4456660/normal_6013f53968a2a.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/wicca_a_guide_for_the_solitary_practitioner.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446931/normal_5ff0c341150bf.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/4949523395.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/how_do_i_reset_my_funlux_camera.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/descriptive_essay_examples_middle_school.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muvegeposobaxog.rf.gd/adobe_acrobat_pro_windows_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/35723904938.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/juwiwepujanavi.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/dewalt_drill_driver_set_80-piece_dw2587.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/71367899526.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_off0000d7b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B4 5056 bytes
SHA-256: c1dc086446774b834774572a8b4675f672db3284a2b6cbe7a984b9e7a7a80f84
font_01_sfnt_off0000e8fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FD 9972 bytes
SHA-256: f42f8f958b26c6f4b20e2940fada05d2556ef5fa958d080694fd15d8e20cba67