Malicious PDF — malware analysis report

Static analysis result for SHA-256 960ceeb45d79e116…

MALICIOUS

PDF

93.7 KB Created: 2021-03-27 20:39:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9671580338e30bab24ae256bfd20029 SHA-1: d218d7b87b62a458a4285297baa365eeabc61c57 SHA-256: 960ceeb45d79e116b1e16f6559225adbd8b504ac02422c66fb49cd479da34b83
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing or malware payload. The document body, though heavily obfuscated, suggests a lure related to 'Protist survey lab answers', aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=protist+survey+lab+answers
    • http://kafalukuwemi.mygamesonline.org/terozun.pdf
    • http://kopogaxepaku.sportsontheweb.net/zobedopukor.pdf
    • http://tokexal.medianewsonline.com/27588974969.pdf
    • https://cdn.sqhk.co/dunuxorigu/ahhEyhi/50755223520.pdf
    • https://cdn.sqhk.co/ralapogifur/L6jgghg/nodetodugijamof.pdf
    • http://ihsteam.ru/62174886388vn8yr.pdf
    • https://cdn.sqhk.co/dekorasenu/ijcFNhf/44465603441.pdf
    • http://vofigasu.medianewsonline.com/achievers_b1_workbook_answers.pdf
    • https://cdn.sqhk.co/woguwubege/jijg0WF/my_scrapbook_ideas.pdf
    • https://cdn.sqhk.co/tenerinirik/bhejdhB/best_ww2_fighter_games.pdf
    • http://diporesorojina.scienceontheweb.net/56445633865.pdf
    • https://cdn.sqhk.co/kotoweraga/M6jdPha/boba_tea_take_out_near_me.pdf
    • http://wapividazofar.scienceontheweb.net/fovilewa.pdf
    • https://cdn.sqhk.co/jotoselu/88hj2yN/zofid.pdf
    • https://cdn.sqhk.co/bivotiboma/SCYdgeT/xbox_cloud_gaming_controller_issues.pdf
    • https://cdn.sqhk.co/jefulajidi/icTieRZ/fakiwolofadizivekero.pdf
    • http://tuvosudokalidu.scienceontheweb.net/bullets_and_numbering_in_ms_word.pdf
    • https://cdn.sqhk.co/baxikomo/GieF6hc/alala_kanda_video_song.pdf
    • http://copyrightsupporteds.com/summer_infant_monitor_wont_synctm4dm.pdf
    • http://voicebftyi.com/81594731983qs5y5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xutenasejubibe.atwebpages.com/cbse_class_10_board_exam_date_sheet_2020.pdf
    • http://wivepepubaj.rf.gd/fafinuwupegesadit.pdf
    • http://tufomatewivade.rf.gd/sevoroxesipexofozawenu.pdf
    • http://nowuzapifara.rf.gd/68773740636.pdf
    • http://wabalegawamiraj.rf.gd/how_to_draw_a_person_face_girl_easy.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_off00013187.bin
caf9fca3ca022c3be39c44175a97316928a0ed295939a5bdb3f9e2d6b02e88b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x13187 5076 bytes
font_01_sfnt_off000142f1.bin
d6b9cfcd0f60718d490e617c1f937dd4109502a7691eaf0716cbfc1ef3213ef0
pdf-font-stream PDF embedded font (sfnt) at offset 0x142F1 10856 bytes