Malicious PDF — malware analysis report

Static analysis result for SHA-256 5772b15cf4c8c9e6…

MALICIOUS

PDF

78.9 KB Created: 2021-05-13 12:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfdc52f9dcaf370fcf9cab7d27de1ee0 SHA-1: 767e72e989bdb92478e19034275c01bfab5ea01b SHA-256: 5772b15cf4c8c9e6432aaae63e40d8968b9628236e65f7cc5e7a673a7a78b317
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://jumiwimov.ru/strik?utm_term=how+to+empty+neato+d7', which is likely a phishing lure or a download redirector. The document body, though heavily obfuscated, suggests it is attempting to present itself as informational content to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/strik?utm_term=how+to+empty+neato+d7
    • https://cdn.sqhk.co/tuzevawu/6gdgcif/waze_app_voices.pdf
    • https://cdn.sqhk.co/wenejusuzixe/he2lhfm/82420540747.pdf
    • http://xixabibalusuzip.22web.org/69229175581.pdf
    • http://zavudonalu.66ghz.com/navbar_bootstrap_template_w3schools.pdf
    • https://cdn.sqhk.co/wajerewuwer/QiKhcGw/mascot_dunks_game.pdf
    • https://cdn.sqhk.co/wamedexipun/50iejeQ/game_zombies_attack_mod_apk.pdf
    • https://cdn.sqhk.co/rebiguta/sihyyha/38412662395.pdf
    • https://cdn.sqhk.co/gizukakom/kjbgg8J/jewirikobugov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://benifolagalat.epizy.com/wewevamukomagaza.pdf
    • http://vidojizo.rf.gd/selune.pdf
    • https://s3.amazonaws.com/zosevid/can_i_trade_binary_options_in_the_us.pdf
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_9af95bf1f47c49d4bccd92101e852257.pdf?index=true
    • http://moliduduzabet.epizy.com/19570600423.pdf
    • https://s3.amazonaws.com/dadupawo/acer_aspire_mc605_manual.pdf
    • https://s3.amazonaws.com/vazisi/cima_management_case_study_answer_format.pdf
    • http://bezekibep.epizy.com/how_to_uninstall_evenflo_car_seat_base.pdf
    • http://dogefifuga.rf.gd/setodumidepuka.pdf
    • https://67d298e0-85f4-4ad4-bf36-e1ac857e42fc.filesusr.com/ugd/b6bf5b_99a236fd3a2a477ba53e214f87f991bb.pdf?index=true
    • http://zusamab.epizy.com/ak_singer_hd_image.pdf
    • https://d5fd0048-bb8d-45a1-ba21-28d1cb0b7162.filesusr.com/ugd/5e8de6_28997996740241a3a88caaa0c79d703c.pdf?index=true
    • https://s3.amazonaws.com/taguxif/marvel_future_fight_apk_5._2._0.pdf
    • https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_9aaa8e5d057e4330ac9b91f6d5287e44.pdf?index=true
    • 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_off0000f5de.bin
0afc647b70bcadca26338de897b6a8d98c89f513f3ff869269f124345c9f1a7c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DE 5032 bytes
font_01_sfnt_off0001070c.bin
c81bbb4afe89ca81f20f386be69dc5806dde3f29c05365be88d01e423c988f49
pdf-font-stream PDF embedded font (sfnt) at offset 0x1070C 11236 bytes