Malicious PDF — malware analysis report

Static analysis result for SHA-256 7163a8efe0fb97bf…

MALICIOUS

PDF

365.9 KB Created: 2021-02-18 11:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 98c11007c22f6f94fd3d3a6dab609018 SHA-1: 97b92676c9e88262194a942f3c3525b9448f08bb SHA-256: 7163a8efe0fb97bf9241efa80fc2c000475f545ac6bf086fec9756bc36379370
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains an embedded URL that mimics a search result for a popular PDF, likely to trick users into downloading a malicious file. No scripts were extracted, and the document body was unreadable, but the overall pattern suggests a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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://druttle.ru/wb?keyword=d&d%205e%20monster%20manual%20pdf%20free%20download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420036/normal_602533b6ae3c5.pdfIn PDF document text
    • https://werijininen.weebly.com/uploads/1/3/4/6/134635560/29440c594f3696.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421199/normal_5ff436e7c7bf0.pdfIn PDF document text
    • https://bevabuje.weebly.com/uploads/1/3/4/8/134897483/duxaga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467287/normal_5fd640f6e4ecb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5fd156668e391.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_6011a001da2d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374211/normal_5fd3430a24ac8.pdfIn PDF document text
    • https://kuxiwidozerapi.weebly.com/uploads/1/3/4/7/134728536/rubalupuwo-komejopisi-gibat-ruzapiliv.pdfIn PDF document text
    • https://volufijipezuji.weebly.com/uploads/1/3/4/7/134703795/fozuteg-jisux.pdfIn PDF document text
    • https://natadafupekex.weebly.com/uploads/1/3/1/8/131856288/tepikoniv-fidarokolate-zizimolikiwiv-wuvif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_602285ce79458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379614/normal_5fd7a56491b21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387826/normal_60272edcdebcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476578/normal_5fe6a2b7bb087.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493579/normal_601b7b076e14c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00056d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D3C 4156 bytes
SHA-256: 4137e011fb50e940388b7a91a31e36f70741d8ce55ef6fbc7fb0314564e06879
font_01_sfnt_off00057b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B6C 15100 bytes
SHA-256: 7383e77fdbb3772a1d7fdb9637b354c9ad78b7bb50e70e308a4ca811f31e75d8

Open this report in the interactive analyzer, or submit your own file for analysis.