Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cf0eacd0837ab3b…

MALICIOUS

PDF

71.4 KB Created: 2021-05-14 08:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb7177105d744fe8d24a0be5bd3c1b74 SHA-1: e4239db2c91b687f3270d4f92273032ba14c7b4e SHA-256: 2cf0eacd0837ab3b58a644defa542e5cd2eb7a4aff9ae835c7e9ada12451ad8d
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged the PDF as malicious. While no scripts were directly extracted, the PDF structure and the presence of external links suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8287

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://bologen.ru/strik?utm_term=troy+bilt+tb225
    • http://repizedozoful.sportsontheweb.net/odisha_treasury_challan.pdf
    • http://tuvivukaroj.mygamesonline.org/56370261556.pdf
    • https://cdn.sqhk.co/gijesali/ghfhijd/screen_recording_with_audio_free_software.pdf
    • http://peguxukeziku.sportsontheweb.net/adolescent_health_care_a_practical_guide.pdf
    • http://pawezujexas.mywebcommunity.org/vacuum_die_casting_process.pdf
    • http://ladujose.sportsontheweb.net/28938294222.pdf
    • http://bawimip.sportsontheweb.net/fleck_5600sxt_64_000.pdf
    • http://nezatarofarix.getenjoyment.net/sleep_apnea_patient_education.pdf
    • https://cdn.sqhk.co/vobilurerire/hcqjc46/espn_nfl_playoff_machine_2021.pdf
    • https://cdn.sqhk.co/tamejenonisi/cjdghjd/bawimuwokefajuviru.pdf
    • https://cdn.sqhk.co/vofepubot/9DRvhgh/ikea_catalogue_2018_australia.pdf
    • http://giwosoto.sportsontheweb.net/53706771668.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kefiperizonofu/intangible_assets_under_development_in_balance_sheet.pdf
    • https://s3.amazonaws.com/zuvovoxigumuz/67751085667.pdf
    • http://merovuditipin.onlinewebshop.net/bovugov.pdf
    • https://s3.amazonaws.com/xamapebonijos/metro_exodus_for_android.pdf
    • https://s3.amazonaws.com/jivagajamav/angular_template_reference_variable_in_code.pdf
    • https://s3.amazonaws.com/bidurudilidujug/how_to_clean_the_inside_of_a_weber_spirit_grill.pdf
    • http://mitadur.epizy.com/einstein_biography_isaacson.pdf
    • https://s3.amazonaws.com/selivuvumepaveb/suxagizefegidol.pdf
    • https://s3.amazonaws.com/wejuvono/allied_movie_300mb.pdf
    • http://tisuvelepep.rf.gd/30057290138.pdf
    • http://fizarurepolap.epizy.com/clasificacion_de_bethesda_2020.pdf
    • http://momedeturus.epizy.com/sunquest_ice_user_guide.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2c4.bin
f9f3dfc85423ba2fa9bcf1f50ed9d0b6eec123e4de2e80d469a0c0b8c576d953
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C4 4740 bytes
font_01_sfnt_off0000f304.bin
ca0b2a9033d923a14ca6444adbe2aec1b97e8e29c72b430d69b6c08315dddbcd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF304 10884 bytes