Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aeef58cd6625b4a…

MALICIOUS

PDF

77.7 KB Created: 2021-02-28 12:16:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7969165b36dad8349ea9e8deef56cc9 SHA-1: 20e22e9d690758e97842b3b4d8a2006268b05911 SHA-256: 4aeef58cd6625b4acbe267f02c93f5c64ba8832055d38e55adbc06a2afe2e789
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains multiple embedded URLs, one of which is explicitly listed as an external URI pointing to a suspicious domain. The presence of these URLs suggests the document is designed to redirect the user to a malicious site, likely for phishing or to download further malware.

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://jacksth.ru/strik?utm_term=poulan+2150+chainsaw+repair+manual+pdf
    • https://cdn.sqhk.co/berovanova/ijhqQhe/how_to_make_a_spiral_rainbow_balloon_arch.pdf
    • https://pegepujime.weebly.com/uploads/1/3/1/4/131453637/4626102.pdf
    • https://veburuja.weebly.com/uploads/1/3/0/7/130739173/9503577.pdf
    • http://xisumagogali.getenjoyment.net/interview_questions_and_answers_for_software_developer_in_.net.pdf
    • http://idealslim-italiaoficial.site/sat_subject_tests_scores_for_ivy_leaguesh3usq.pdf
    • https://nupetumagapet.weebly.com/uploads/1/3/1/8/131859993/547485396dd.pdf
    • http://leziwazedo.mypressonline.com/macbeth_full_name_shakespeare.pdf
    • http://d-youtube.com/terrace_house_tokyo_2019_2020_downlo2pcmp.pdf
    • http://dirtygirl.fun/xadumipaegugm.pdf
    • http://getcreditcheck.info/bugaboo_cameleon_mattress_sheetss297j.pdf
    • https://cdn.sqhk.co/nowavutu/ehdd8in/margaritas_near_me_open_late.pdf
    • https://cdn.sqhk.co/wefenosefob/aIMGQii/24797535333.pdf
    • https://vokubopupabilu.weebly.com/uploads/1/3/4/6/134691430/877959.pdf
    • http://prodson.space/nazililurudemufifoneze55m94.pdf
    • https://vojituletakez.weebly.com/uploads/1/3/0/8/130874409/8010244.pdf
    • http://segwaywheelchair.ru/factoring_completely_worksheet_kuta1tvco.pdf
    • http://dimapofisapa.22web.org/excel_formulas_not_updating_until_enter.pdf
    • http://linavaluviriv.getenjoyment.net/what_is_einsteins_theory_of_happiness.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000ef57.bin
a18438629829c0e1ea42bdf7ed28639eeda86fdfeae512143d80be9e1ce60489
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF57 5936 bytes
font_01_sfnt_off00010380.bin
401bc6428270e2642f465745986afe28a303a9ae96a1802dca5118601dbac71b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10380 11188 bytes