Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c71b72b8f7dfa2…

MALICIOUS

PDF

82.0 KB Created: 2021-03-12 14:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2bb08e77bfe97c498bda8fa6884d245 SHA-1: d12c1965c80b835992c185b8beecfa05913dfb4f SHA-256: f7c71b72b8f7dfa27526f26c5e3c2c1ac2cd56d15c818163a98985e52dfd7325
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of a 'download button' heuristic and an embedded URL pointing to a search result for a free PDF download suggests a social engineering lure to trick users into downloading a payload. The document body contains garbled text, indicating it is not intended for human readability but likely contains obfuscated malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/wix?keyword=a+march+of+kings+pdf+free+download
    • https://cdn-cms.f-static.net/uploads/4392651/normal_603f7e4aba290.pdf
    • https://static.s123-cdn-static.com/uploads/4380078/normal_5fcb503c97ff7.pdf
    • https://noxaxubobef.weebly.com/uploads/1/3/1/3/131380993/tudekoji_gelonumarezu_jaxunigu_bafope.pdf
    • https://cdn-cms.f-static.net/uploads/4413982/normal_600dfd71aba1d.pdf
    • https://xodefoxewez.weebly.com/uploads/1/3/5/3/135325776/1754002.pdf
    • http://vekvelo.ru/how_to_learn_software_engineering_online61dan.pdf
    • https://cdn.sqhk.co/fazejitev/cGFa9gj/neporavepakugezotigaxigew.pdf
    • http://rankingcoach-seo.com/war_and_peace_leo_tolstoy_movieuzbnl.pdf
    • http://daddytestit.xyz/29826199764zjds4.pdf
    • http://ig-copyrightnotice.com/oppo_bdp-103_region_free_kitocwva.pdf
    • https://poxuweke.weebly.com/uploads/1/3/1/6/131606533/gurut.pdf
    • https://cdn.sqhk.co/toviranevu/Vyuieig/vapelinow.pdf
    • https://cdn-cms.f-static.net/uploads/4465259/normal_603d8a51e40f6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tiluwisulepam/hamlet_biblioteca_virtual_universal.pdf
    • https://s3.amazonaws.com/fosagobomap/andrew_yang_debate_2_performance.pdf
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_10e6409da44b49bda508942f341f4673.pdf?index=true
    • https://s3.amazonaws.com/xoferuzu/functional_analysis_definition_and_examples.pdf
    • https://938a05da-450f-421e-a59b-0448473a402a.filesusr.com/ugd/cb5dea_15c00caeeb924c53be2836f5db24c111.pdf?index=true
    • 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_off00010248.bin
6d766f7e3a82a523a125d600f7e637f6e8a1630ccb9377505b0f378ffcfa4d14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10248 5712 bytes
font_01_sfnt_off000115a1.bin
d734f06b65357df14213609d0f81eff64a6e742d4d245ea649c0d440f22c47d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115A1 10936 bytes

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