Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa7a4173272c142b…

MALICIOUS

PDF

87.0 KB Created: 2021-03-16 20:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25a5819248b76e9da065f0ded61c08d9 SHA-1: e494677d1e073e1299bb8784a0379e06032127f5 SHA-256: fa7a4173272c142b71f69b67001849095d83d78bfed68d8660d44ae439961002
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of external URIs, specifically `https://ponafet.ru/award?keyword=america+s+test+kitchen+100+recipes+pdf`, suggests the document is designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/award?keyword=america+s+test+kitchen+100+recipes+pdf
    • http://jabilevij.mypressonline.com/gevutukufanofefumam.pdf
    • https://cdn.sqhk.co/vagekasip/ahU5he1/92251102939.pdf
    • http://golixudib.mypressonline.com/povoralenepiropuzomog.pdf
    • http://pumaguli.scienceontheweb.net/backlight_screen_game_boy_sp_gba_sp_ags_101.pdf
    • https://cdn.sqhk.co/wibononuve/kC0ybgG/rujekijopixikozego.pdf
    • https://cdn.sqhk.co/xezafube/jjajjTz/wwe_2k15_accelerator_pc.pdf
    • https://cdn.sqhk.co/bilejufikone/iGifjcA/32461406010.pdf
    • http://pepojen.iblogger.org/crystal_reports_totext_leading_zero.pdf
    • http://palawawez.mypressonline.com/what_does_it_mean_application_in_review_processed_yet_uif.pdf
    • http://dugarudewemudo.sportsontheweb.net/72082219515.pdf
    • http://wutugidejavazu.scienceontheweb.net/mahalaxmi_calendar_october_2020_download.pdf
    • http://jebebixazonutug.mypressonline.com/birewaxapigopadedomis.pdf
    • http://rolopigabetitu.scienceontheweb.net/toefl_model_question_paper.pdf
    • http://zurujavurobe.scienceontheweb.net/tutevimemoduxe.pdf
    • http://kedugobepuged.mywebcommunity.org/fezevasuzakubexi.pdf
    • https://cdn.sqhk.co/litanamamusi/fxaRHIr/funny_sms_ringtones_mp3_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://todiwefexoneb.atwebpages.com/lok_sabha_election_date_2020_download.pdf
    • http://jidutibezerediv.rf.gd/aprenda_a_desenhar_linha_clara.pdf
    • http://sazasewugekupej.onlinewebshop.net/poxasix.pdf
    • http://nomamazuzut.atwebpages.com/how_to_make_a_dog_sweater.pdf
    • http://birotizedu.epizy.com/iso_45001_risk_assessment_template.pdf
    • http://kepofif.onlinewebshop.net/moment_of_inertia_of_beams.pdf
    • http://teluroluxeterez.myartsonline.com/rethinking_early_childhood_education.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001069f.bin
dcbec5ac4b7b4d83a7a70c830212f67c88d4cab5a3af5f015e29788241a0df4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1069F 5288 bytes
font_01_sfnt_off00011864.bin
3c70fed178abbef46cf5d3794e841925617d386299d8088e44d3b4a405640608		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11864 11964 bytes
font_02_sfnt_off00013feb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13FEB 4324 bytes

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