Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c418e191f025dec…

MALICIOUS

PDF

88.6 KB Created: 2021-04-30 12:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6ef802d31dee1c040074dde17dc2e4d SHA-1: 775829e689ddfd0289a7d5c152635ebb3426f3fe SHA-256: 9c418e191f025decc6acca090769875d1c8bb96733e2f98ca04dd12b03876bc2
94 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, indicating a link farm or phishing lure. ClamAV detection as 'Pdf.Phishing.Trojan' further supports malicious intent. The presence of embedded URLs and the structure suggest an attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3268

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/strik?utm_term=what+plate+boundary+do+compression+and+subduction+take+place
    • http://mebevevi.mywebcommunity.org/90912963660.pdf
    • http://larijasetejupaz.mypressonline.com/95850011777.pdf
    • https://cdn-cms.f-static.net/uploads/4427284/normal_604845efb773c.pdf
    • http://lnstagramcopyrighthelps.com/paths_to_recovery_step_4wddgj.pdf
    • http://degakak.sportsontheweb.net/tuposikemoloruvotu.pdf
    • http://wowogobofomufu.mygamesonline.org/fanijuvusot.pdf
    • http://myshoes.moscow/48273156480wyv3a.pdf
    • http://stickerrus.ru/what_is_the_best_robotic_vacuum_on_the_market9lc5y.pdf
    • https://cdn-cms.f-static.net/uploads/4478655/normal_603d295d10bbc.pdf
    • https://static.s123-cdn-static.com/uploads/4408471/normal_60001e479a6af.pdf
    • http://pixunune.sportsontheweb.net/55241394789.pdf
    • http://gizigevom.mygamesonline.org/23173362298.pdf
    • http://idealicaitaly.site/the_diary_of_anne_frank_frances_goodrich_and_albert_hackett_audio0c58x.pdf
    • https://cdn-cms.f-static.net/uploads/4455208/normal_5fdae470b7d81.pdf
    • http://puwinowelin.medianewsonline.com/cursos_de_ingles_basico.pdf
    • http://maddot.space/radio_flyer_wagon_instructionsmd3vm.pdf
    • http://pressit.fun/free_online_french_grammar_exercises_with_answersjvu0z.pdf
    • http://limelusefi.iblogger.org/22545402270.pdf
    • http://deutschebank-meine.com/49411687695424z7.pdf
    • http://pochta-24.cc/oncologia_medica_veterinaria_e_comparatal4c0h.pdf
    • http://pevazaw.mypressonline.com/official_badminton_score_sheet.pdf
    • http://mail-autoscout24.net/harvest_moon_animal_parade_clothing_guide5rg4e.pdf
    • https://cdn-cms.f-static.net/uploads/4500678/normal_601d3126190c3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mafevela.rf.gd/lijososerulaporulib.pdf
    • http://topawukukuti.epizy.com/55905180876.pdf
    • http://bogibil.rf.gd/queen_size_bedsheets_online.pdf
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000131f9.bin
6c1d6fb60a72ef32d314f07852d966859d59eb4b24b52790d3cc69c3f62680c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131F9 6416 bytes
font_01_sfnt_off000141cd.bin
2378b4bb34c1f3e8b1bd36c0aa9461b47ed85439ecac802d27b19229c6d8c3c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x141CD 5632 bytes

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