Malicious PDF — malware analysis report

Static analysis result for SHA-256 842a00ab98b371a1…

MALICIOUS

PDF

81.7 KB Created: 2021-04-23 16:55:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d91b346de1907b145d54f4385a23b52 SHA-1: 5692dc7351f6108f76015b0a7fa8961755199e9e SHA-256: 842a00ab98b371a1f21340743db41fcc0b01f9979db7450906bf16a6510360f9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious URL, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to redirect the user to a compromised site, likely as part of a phishing campaign.

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://xezojetit.ru/strik?utm_term=what+are+examples+of+personal+accomplishments
    • http://setopin.mypressonline.com/how_to_make_a_toga_from_a_bed_sheet.pdf
    • http://hot-money.fun/claro_que_si_workbook_answerst7mj2.pdf
    • http://lojasamericanasbr.com/samsung_grand_prime_battery_model_number6mwle.pdf
    • http://uspex22.online/918974122mhhmo.pdf
    • http://zokidinodajives.getenjoyment.net/bpsc_cdpo_syllabus_download.pdf
    • https://cdn.sqhk.co/gujurolekuma/PGhaicb/83789157087.pdf
    • https://cdn.sqhk.co/xurakipigub/4jfigjc/eve_echoes_market_guide.pdf
    • http://zurujavurobe.scienceontheweb.net/23229738065.pdf
    • http://liolika-rsya.ru/87098648448yrz1z.pdf
    • http://xajavawinereko.mywebcommunity.org/xajasag.pdf
    • https://cdn.sqhk.co/damukowabij/iajdhb9/super_mario_odyssey_guide_book.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f65e5bd1-ad4c-4c3a-adf2-33bfe09cdacd/should_covid-19_be_written_in_all_caps.pdf
    • http://gotimovogeminir.myartsonline.com/10705194807.pdf
    • https://uploads.strikinglycdn.com/files/e79995f9-9797-419e-879d-34be755adc95/63290865612.pdf
    • https://uploads.strikinglycdn.com/files/c3976fca-3c7e-4284-bcc7-47516aa8eff6/kenmore_front_load_washer_agitates_but_wont_spin.pdf
    • http://forojiwimudobo.atwebpages.com/bombay_high_court_causelist.pdf
    • http://xobebol.onlinewebshop.net/sijalexaxokosifu.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_off0000ff38.bin
b69305926b7c9493fbab4cf3b9bf5400137f7f979eae9c74e32cb320ed66d958
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF38 5336 bytes
font_01_sfnt_off00011147.bin
776d005e3af97d56bdf72f0e5ee79047fdef506ff52e554b133622f64e65a0d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x11147 11320 bytes