Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8d3665d274fc6a5…

MALICIOUS

PDF

72.6 KB Created: 2021-02-27 17:11:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bdf468e0076a364070ac34575c17286a SHA-1: 2cb00bfcd10879093998c8d567c5551f694a94fc SHA-256: a8d3665d274fc6a5537d6278d1950f3b7eba16089c267a662e5aa903e9ed5c39
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://mezovuduw.ru/award?keyword=matlab+plot+legend+line+thickness PDF link annotation
    • https://defasoxajex.weebly.com/uploads/1/3/1/4/131405962/duwizetilitatusemu.pdfIn PDF document text
    • http://yatvoyya.fun/soundcloud_music_free_online5lkij.pdfIn PDF document text
    • https://bewevirat.weebly.com/uploads/1/3/1/4/131437926/duserisupivorepolepa.pdfIn PDF document text
    • https://wurilulisewanid.weebly.com/uploads/1/3/4/7/134728532/disur-gareso-reluzi-xojaxobogire.pdfIn PDF document text
    • http://pupalara.22web.org/rotalubevugidor.pdfIn PDF document text
    • http://vuvopogawuxaxax.22web.org/5799506230.pdfIn PDF document text
    • http://xupubetulitut.iblogger.org/ma_part_2_admission_form_punjab_university.pdfIn PDF document text
    • http://serdyukov.pro/259338935537z58v.pdfIn PDF document text
    • https://terunutu.weebly.com/uploads/1/3/5/3/135319236/9929554.pdfIn PDF document text
    • https://kozewililusu.weebly.com/uploads/1/3/4/0/134013002/699eb.pdfIn PDF document text
    • http://tiktokhd.design/the_freedom_writers_diary_teachers_guide_2007_crossword_puzzle_answerslcf8t.pdfIn PDF document text
    • http://samiter.22web.org/alan_walker_songs_dj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xipijokezi.rf.gd/49124226223.pdfIn PDF document text
    • http://tobikinos.onlinewebshop.net/47869770277.pdfIn PDF document text
    • http://rulumagevamed.epizy.com/yahoo_mail_settings_for_android_app.pdfIn PDF document text
    • http://mukexojot.rf.gd/18230514996.pdfIn PDF document text
    • http://zukeligo.rf.gd/briggs_and_stratton_725ex_190cc_oil.pdfIn PDF document text
    • http://xurosuforudev.atwebpages.com/chick_fil_a_chicken_salad_nutritional_information.pdfIn PDF document text
    • http://vamagirizotaro.rf.gd/in_the_mood_for_love_poster_etsy.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_off0000d424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD424 3104 bytes
SHA-256: 3e681b38d6835c288b394c0645356538e9f6043aa9b0eded74974574aad53388
font_01_sfnt_off0000df55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF55 5448 bytes
SHA-256: c0a14df14e761cba462d2a841e31e61547e4f5853247a4777000ae5c2d9b71ae
font_02_sfnt_off0000f1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DF 10240 bytes
SHA-256: 51de73041f85861caf84470d9b5623c62aa0e0389f56799cb95a861d225ca03d