Malicious PDF — malware analysis report

Static analysis result for SHA-256 66aae167f7576b07…

MALICIOUS

PDF

75.1 KB Created: 2021-03-08 17:04:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eabccd4597a71d45f9512fe69d10d608 SHA-1: 7d1aa9bff798ae89776040dca745e1ad08b6b619 SHA-256: 66aae167f7576b0706856179513a80f2b9681c1fd00296db5de6baa7a156468d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a malicious domain, likely intended to phish or deliver a payload. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by directing them to a harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/aws?utm_term=what+is+merv+filter+rating
    • https://cdn.sqhk.co/tinipuded/ieicccz/that_s_literally_me_meme.pdf
    • https://cdn.sqhk.co/fodibaniwe/g9BtNjf/gun_reload_sound_download_ringtone.pdf
    • https://cdn.sqhk.co/mujawiru/Eggibhe/hummer_h8_jump_starter_review.pdf
    • https://cdn.sqhk.co/lobinazema/jhfG2ii/fuzapofewepaguwajedadudoj.pdf
    • https://cdn-cms.f-static.net/uploads/4366625/normal_602ae2d07a82f.pdf
    • https://cdn.sqhk.co/zejizoguzut/ibNDggT/pac_learning_example.pdf
    • https://cdn.sqhk.co/winibitorut/lgcgjhc/how_to_install_morph_mod_minecraft_pe.pdf
    • http://gatorama.space/bojofelebelamefopidosh01f.pdf
    • https://cdn.sqhk.co/dolitife/ggiemPq/first_strike_ration_menu_7.pdf
    • https://cdn-cms.f-static.net/uploads/4465702/normal_603544563793d.pdf
    • https://cdn.sqhk.co/roratumopiv/iZieian/simple_business_plan_outline_template.pdf
    • http://itwow.info/50048376883j99vc.pdf
    • https://cdn.sqhk.co/zolulesar/jaO6hd2/36476276084.pdf
    • https://cdn.sqhk.co/zafupusapun/ifriit3/donate_button_paypal_wordpress.pdf
    • https://cdn.sqhk.co/wepurodapike/ieIjiCq/16257456282.pdf
    • https://cdn.sqhk.co/kawurefeki/hdjbhjN/ampx_music_player_beta_2018.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fewifuwu/disney_piano_sheet_music_easy_free.pdf
    • https://s3.amazonaws.com/setaxilitozuko/fevenanor.pdf
    • https://s3.amazonaws.com/bidurudilidujug/2000_ford_ranger_xlt_towing_capacity.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_off0000e765.bin
5b2c60174e5d927c90872e8d74e4527346c0c0c8a51f6f6128781a6043dac43c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE765 5252 bytes
font_01_sfnt_off0000f92d.bin
ccb582bd117098e41f59bd0bd888ab3725a1e60705a856756c3f8892ac954306
pdf-font-stream PDF embedded font (sfnt) at offset 0xF92D 11168 bytes