Malicious PDF — malware analysis report

Static analysis result for SHA-256 d424b1ed86add288…

MALICIOUS

PDF

90.5 KB Created: 2021-04-09 22:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeda868bf3e68cb063f12838e25cedfd SHA-1: 7605ee901bfae3a8e8f0d2a8dd1104063a1f4012 SHA-256: d424b1ed86add28896391a8a3d20ebb5c2905907809815d00713ce958ee2379d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to a product, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=mr+coffee+maker+4+cup+filter
    • http://sdl-trade.com/vox_ac15_review_ultimate_guitarp6b8t.pdf
    • http://lotibamuzuti.scienceontheweb.net/the_little_book_of_life_after_death.pdf
    • http://sungo1.space/numeros_del_1_al_100_para_imprimir7ngli.pdf
    • http://sosunimepewe.22web.org/conjunctions_worksheet_8th_grade.pdf
    • http://cheatyou.site/fisdap_paramedic_cardiology_study_guidemfprt.pdf
    • http://rajukilodagoje.mygamesonline.org/psychology_schacter_gilbert_wegner.pdf
    • http://storeyou.store/formato_de_informe_de_revision_por_la_direccionhik8t.pdf
    • http://laxana.ru/kafepupixikitn4ayj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b26b3380-b14b-4318-885c-2b1d8a4db873/avaya_2420_phone_headset.pdf
    • https://s3.amazonaws.com/xazarujokemus/how_much_money_does_it_cost_to_reupholster_a_recliner.pdf
    • https://s3.amazonaws.com/tixeligufokup/buwabutufog.pdf
    • https://uploads.strikinglycdn.com/files/b9e141c5-1d97-4bf7-bc2d-e708ec2aa5e4/melhor_curso_de_marketing_digital_rj.pdf
    • https://s3.amazonaws.com/gimisorixosu/amman_album_song.pdf
    • https://s3.amazonaws.com/rodiligarexo/turnitin_uk_free.pdf
    • http://vixabewe.rf.gd/88532890412.pdf
    • https://s3.amazonaws.com/xufujofaleki/figo_guidelines_for_abortion.pdf
    • http://futikuzita.onlinewebshop.net/does_costco_have_portable_air_conditioners.pdf
    • https://s3.amazonaws.com/lurutopobi/zogipivitepilub.pdf
    • https://s3.amazonaws.com/zifilobesumafi/alphabet_games_free_for_pc.pdf
    • http://sarijuwowu.rf.gd/agile_testing_crispin.pdf
    • https://s3.amazonaws.com/sefukirexuwekij/ritiwezemuguwi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000124ff.bin
3ec404702a40e6439cb3038d976b78726a34db09b8607939d20de73276ad8139
pdf-font-stream PDF embedded font (sfnt) at offset 0x124FF 5140 bytes
font_01_sfnt_off0001367c.bin
d60031e8a12125c603f0a163b07f232fa8025fabc89d75ac8e7e25387262d215
pdf-font-stream PDF embedded font (sfnt) at offset 0x1367C 11256 bytes