Malicious PDF — malware analysis report

Static analysis result for SHA-256 a425edd4662bb5ad…

MALICIOUS

PDF

58.8 KB Created: 2020-11-10 12:23:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0b9ed65385d6f79dfef2d9fa83f50f9b SHA-1: 91608e18663e47909e02901d667aa2d61162f1e6 SHA-256: a425edd4662bb5ada64160426a283f50d7efed145f7c40d8e0125bcd7da0e410
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to reference a game, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffi.ru/aws?keyword=dragon+ball+z+devolution+unblocked PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412606/normal_5f93a5186e38f.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/doredezugebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379841/normal_5f98d71075ee6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1519ea24-cb95-443d-a380-12873df9fcd7/garmin_gpsmap_76_manual_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/tapper_arcade_gameplay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c27d97d2-b646-466b-b871-fdea046cf5fb/zadezulepawurigereresar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eaac277-73a5-46e6-9638-c41dd4b022f1/towug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b201e79-46cf-4b81-b441-5734cbeaa9ab/how_to_spot_fake_amazon_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa1af0a-a854-49ae-9aee-33568e6ef42e/bangladesh_currency_into_pakistani_rupee.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/book_review_examples_for_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/todasasobofepupubivugaki.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_off0000ab80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB80 5244 bytes
SHA-256: 9552ed2d933e6b6770f57f1261f5a5dcf542dffb3ea500bd2588dfddd158618d
font_01_sfnt_off0000bd78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD78 9656 bytes
SHA-256: ccd78f71b0425c715bfe2098a61f5d3897f4ddac45ee136c42d1ba773eeb6d9b