Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2d48bd5e30e759…

MALICIOUS

PDF

215.7 KB Created: 2021-03-20 19:28:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: b7a77904bfb84bc72cf58850d9c09dcd SHA-1: 55fe3820e84e8b4c5d63e6b51163db96e88b6004 SHA-256: bc2d48bd5e30e7592b8649bacd61e05acd276c9f5a7389ad3a5c62bdc349e507
136 Risk Score

Malware Insights

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

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The embedded URL and the heuristic indicating a password-protected archive lure suggest an attempt to trick the user into downloading further malicious content. While no scripts were directly extracted, the PDF structure and the nature of the detected threat point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://leonvi.ru/wix?keyword=filmadora+sony+hdr-cx440+manual PDF link annotation
    • http://lojapunerilifev.22web.org/springerlink_ebooks_free.pdfIn PDF document text
    • http://musomojil.mywebcommunity.org/ocean_basket_sushi_menu_south_africa.pdfIn PDF document text
    • http://jajokojunewi.mypressonline.com/angelus_novus_saggi_e_frammenti.pdfIn PDF document text
    • http://bokubewere.22web.org/meditations_on_first_philosophy_meditation_2_summary.pdfIn PDF document text
    • http://vobemosezo.22web.org/26610089524.pdfIn PDF document text
    • http://mufawajidoxe.22web.org/accounting_standards_issued_by_icai_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/KAxI2gj/31425731895.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/zh2idjf/88260647112.pdfIn PDF document text
    • https://cdn.sqhk.co/podiwilur/bYjimia/fetopeletirivesemi.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/jaxulozixojanugisi.pdfIn PDF document text
    • http://mitatizizuje.mypressonline.com/brief_summary_of_hamlet.pdfIn PDF document text
    • https://cdn.sqhk.co/zopizote/H1AOgfb/hole_vs_block_io_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kevisokifo.rf.gd/48510155039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d01938f4-0c84-4441-8073-e9dc23c05518/kowovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e3cd401-dfee-4936-852a-d10662f77cb9/bemulonuvojiginoroki.pdfIn PDF document text
    • http://funakadoni.rf.gd/pentaho_schema_workbench_tutorial.pdfIn PDF document text
    • http://zilazop.rf.gd/taravamepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc868c53-5127-4f9c-b3f4-509d9f2eaad8/62561122151.pdfIn PDF document text
    • http://jonaxuso.rf.gd/calidad_total_en_los_servicios_de_enfermeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c172968a-3412-4346-8095-cae81fb19c7f/gosaxoxivovupowusoxok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5596179-9e63-48b8-8ee2-ad95cfb30583/journal_of_applied_corporate_finance_subscription.pdfIn PDF document text
    • http://gefimosikalet.rf.gd/pofimedinujanivadajomuxa.pdfIn PDF document text
    • http://pimibini.epizy.com/28747180809.pdfIn PDF document text
    • http://betugoxutufaf.epizy.com/taxonomic_classification_of_algae.pdfIn PDF document text
    • http://tebuwawezizafes.onlinewebshop.net/sub_divisional_meaning_in_hindi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000304cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304CF 2964 bytes
SHA-256: dfb8a42f1ebcae13719b86d4f2e501ada381e2ed45c40e7505157b33fa20eff2
font_01_sfnt_off00030f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F4A 5564 bytes
SHA-256: 5f678ec7247c6ed5a27e79c04da1ba1ddac3b624f5c32fff2c5a106b4883b009
font_02_sfnt_off00032223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32223 15172 bytes
SHA-256: 9180a8d17845101fa4682358b3a501c01d2aa6d3e2851e58eadedb726c2c319b

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