Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c0f242d4c73594…

MALICIOUS

PDF

70.5 KB Created: 2021-02-25 16:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 68278e148b43f17177b80ce12772bba4 SHA-1: 47ce0a595fd8f1418262032b6aae8f3aa0428d3c SHA-256: 57c0f242d4c73594db1153b5c5f7a501f0ef41ea365da6915f1d346324d009c9
126 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
  • 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.
  • 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/award?keyword=we+are+going+on+a+bear+hunt+activities+eyfs PDF link annotation
    • https://cdn.sqhk.co/belumozobu/iNIOhbd/jaman.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/jhhejd6/manetivalegi.pdfIn PDF document text
    • http://sportita.fun/algebraic_expressions_worksheets_grade_8dub1g.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/how_to_export_midi_tracks_from_garageband.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/cMjahjn/fudekeluzugukenit.pdfIn PDF document text
    • http://suzamajotibe.mywebcommunity.org/how_to_find_ip_address_on_canon_mx490_printer.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/54Fm2yA/fill_in_holes_in_wood.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/what_is_the_opposite_of_inverse.pdfIn PDF document text
    • https://cdn.sqhk.co/rinulazopun/hipiccE/35910573629.pdfIn PDF document text
    • https://birupilanakok.weebly.com/uploads/1/3/4/0/134017156/2974392.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/salvation_army_christmas_assistance_frederick_md.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://makakanow.onlinewebshop.net/itil_v3_foundation_course_material.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_off0000d65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65A 5428 bytes
SHA-256: a75c1a64fd45b8ab0eaa6855c01985476c373940460a6b745e3290dac5b33622
font_01_sfnt_off0000e8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E7 10596 bytes
SHA-256: a686a14d4657be5bdd3cb662c9c7e3ffe96001dab267096ebe681722e0487c2c