Malicious PDF — malware analysis report

Static analysis result for SHA-256 497f4407e31309c4…

MALICIOUS

PDF

69.6 KB Created: 2021-02-26 11:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: cbd37f7f834719536785edf85fa09bbb SHA-1: c12d7bbccdf6f03a92e2cd49945a3bb926d31cbd SHA-256: 497f4407e31309c4be8636f5d42f2f882bc4b168c07e14957ced1c4f7b7e24e6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://bologen.ru/wix?keyword=fractional+algebraic+equations+worksheet PDF link annotation
    • http://tomolijoponix.mypressonline.com/zojemazagexokelojevekow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490250/normal_5fdb2652878e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406775/normal_5fe777d90ea59.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/iOzjibD/how_do_i_run_in_dead_by_daylight.pdfIn PDF document text
    • http://pomevufe.22web.org/36285859496.pdfIn PDF document text
    • http://zekabivalejasaj.22web.org/border_song_video_free.pdfIn PDF document text
    • http://rexuwoxaga.sportsontheweb.net/nikosogatarizatogorar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460232/normal_5fff56eff4205.pdfIn PDF document text
    • http://zisuroto.mygamesonline.org/bezimuvekitovetalikusopo.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/boy_scouts_microwave_popcorn_nutrition.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383800/normal_5fc680e3e73c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://demunoj.epizy.com/77920159000.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/66938544081.pdfIn PDF document text
    • http://dogurof.epizy.com/how_to_run_a_diagnostic_test_on_a_cabrio_washer.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/ramdev_yoga_book_in_hindi.pdfIn PDF document text
    • http://luzirilokupozar.rf.gd/assalam_o_alaikum_pic.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/palm_reading_guide_money_line.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/61001668240.pdfIn PDF document text
    • http://zaxawewobarus.epizy.com/fadofewawugituwurofolid.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D7 5436 bytes
SHA-256: 5e11656f857e0d5fa9b22d0c962e3d06df199cd4550e75bff302648177836f00
font_01_sfnt_off0000da58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA58 3128 bytes
SHA-256: 7a84c6cf4f46d4bac8fb6ba896b1cdf686c60a6b9912cc82b79a416172af7d16
font_02_sfnt_off0000e718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE718 9776 bytes
SHA-256: 3073ab0ac2fbc6cac45373355910725f8eba17e5a4f46260c0c6ec9c07e72144