Malicious PDF — malware analysis report

Static analysis result for SHA-256 680dd0f4f064ae6a…

MALICIOUS

PDF

69.1 KB Created: 2021-01-18 07:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 77524b54b2de86fac1a1c78731e641f6 SHA-1: debdcf31ccc1ff01233847023ea26995e7482413 SHA-256: 680dd0f4f064ae6acdb79e270c846c8bb8927ab3ab1344be4576af3d543e6f25
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Google donkey kong country'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafftec.ru/123?utm_term=google+donkey+kong+country PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485296/normal_5fb6796ab0e3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382974/normal_5fdc5b5f586d5.pdfIn PDF document text
    • https://cdn.sqhk.co/zudoputasafe/XglrVKg/war_of_the_west_2019_review.pdfIn PDF document text
    • https://site-1198442.mozfiles.com/files/1198442/9098630408.pdfIn PDF document text
    • https://site-1168038.mozfiles.com/files/1168038/pevebirorutufimavoragasef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f87a07833f9b.pdfIn PDF document text
    • https://site-1177584.mozfiles.com/files/1177584/2048_3d_plus_pc.pdfIn PDF document text
    • https://site-1251798.mozfiles.com/files/1251798/shipping_label_template_google_docs.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/cgghbKL/best_contacts_for_astigmatism_and_nearsightedness.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/rosario_a_la_virgen_maria_viernes.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/58018163025.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/2660000191.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/alcoa_of_australia_limited_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/texifaxepag/xovaxirabebel.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/16388990703.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/wonokoxur.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D4 4916 bytes
SHA-256: 55e10c4be8507cb447c10fb602f70c98516cb894d89c99b91a10c65c79717f30
font_01_sfnt_off0000e3af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AF 10548 bytes
SHA-256: e3be195a60bffda53e7648eb89a442b478008aa4eed660e3d70c47ea179b96ec