Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9e0c79d0291a8f…

MALICIOUS

PDF

77.2 KB Created: 2021-04-07 08:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd947a22e7c35e557b53f53c440208b7 SHA-1: 7b9375f3018da9878d505995bcfcab4f1d83d5b4 SHA-256: 3d9e0c79d0291a8f255dd7a707890f13e580c27ae0cdb8d752b5e05213e9180e
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to a movie release, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=tres+metros+sobre+el+cielo+3+cuando+se+estrena
    • http://italystore.pro/kedixarevucvr1x.pdf
    • http://rowomonug.mywebcommunity.org/medavivijelufawemov.pdf
    • http://top-agent.ru/itil_v3_process_owner_definitiont9x37.pdf
    • http://biomaniix.website/letigosogagaxum3noal.pdf
    • http://amorexpo.com/40910167728gpcmm.pdf
    • http://ejqy.com/800_pounds_to_dollars_in_1940hy6ed.pdf
    • http://tamogulaganero.scienceontheweb.net/82812130375.pdf
    • http://kufejat.sportsontheweb.net/bajaj_pulsar_200ns_spare_parts_catalogue.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rojalexipokadaz/womixapenebov.pdf
    • https://s3.amazonaws.com/luborinizu/13409281070.pdf
    • https://s3.amazonaws.com/mibiwivanetuj/free_stock_certificates_templates_word.pdf
    • https://uploads.strikinglycdn.com/files/d597e838-7dd0-4179-9182-1753e953626b/subject_pronouns_worksheet_grade_3.pdf
    • https://uploads.strikinglycdn.com/files/e1bf96ee-3949-4580-99f9-607e941f634b/51783518951.pdf
    • https://s3.amazonaws.com/povelenavuviw/lejegabeli.pdf
    • http://tavoxelelenasi.onlinewebshop.net/ralatojagewe.pdf
    • https://s3.amazonaws.com/wopari/gutupo.pdf
    • https://s3.amazonaws.com/fibesezati/gebagelawowisakozulefumo.pdf
    • https://uploads.strikinglycdn.com/files/67ebeb2a-c39b-45a9-969d-a92847aee6ea/68222097677.pdf
    • https://uploads.strikinglycdn.com/files/ec4b0449-c9c2-4411-8bf0-729daeb0fba4/65417843183.pdf
    • https://uploads.strikinglycdn.com/files/70d59918-8914-41f0-9c4d-f2c79ea7b350/asus_rt-ac68_firmware_update.pdf
    • https://s3.amazonaws.com/radubozufiwo/70683757002.pdf
    • https://s3.amazonaws.com/dibedamoka/brighton_buses_information.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_off0000ed04.bin
9efab961f5b0a480348cc6c5ea039af637354d3e3075e6025e30e7c18c71d014
pdf-font-stream PDF embedded font (sfnt) at offset 0xED04 5336 bytes
font_01_sfnt_off0000ff0a.bin
f12f103cb67c9893c6ce9611ed1cd88134dc6620cda1eec5338c90e88c711018
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0A 11832 bytes