Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e277fae5565c0e…

MALICIOUS

PDF

73.3 KB Created: 2021-02-09 20:31:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3700df8c8e8a97433eea09fb9678cb80 SHA-1: 0a649faf38a535e8e2463488dd3e005be5ee24a6 SHA-256: d1e277fae5565c0ec3a69bf91df4dd431317c6120e1000a5bc5f4bffa8358047
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated, but the presence of external URIs indicates an attempt to redirect the user to malicious content. No scripts were extracted, but the PDF structure itself is being leveraged for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wb?keyword=convert%20canvas%20to%20bitmap%20android%20example PDF link annotation
    • https://libodarupebixab.weebly.com/uploads/1/3/0/9/130969674/botojesinixirudipob.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/ahcfhha/xajiw.pdfIn PDF document text
    • http://all-host.site/valores_humanos_bernabe_tiernok2dty.pdfIn PDF document text
    • http://amst-watch-v2.club/chicken_genetics_gizmo_answers9n5ir.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/jjggjgg/18056598014.pdfIn PDF document text
    • http://beststudent.space/387290119852fpga.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/hhia4jb/skater_girl_aesthetic_2020.pdfIn PDF document text
    • https://ronurakegilapoz.weebly.com/uploads/1/3/4/8/134852428/7535349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_5fd704d220eff.pdfIn PDF document text
    • https://ligetivegivug.weebly.com/uploads/1/3/4/0/134041815/e14a4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427085/normal_5fe06b01beeaa.pdfIn PDF document text
    • http://kameregeperiwaz.22web.org/57661296183.pdfIn PDF document text
    • http://extrameets.fun/jusefau8kk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tepobibofa.epizy.com/50250590036.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/autocad_3d_models_free_dwg.pdfIn PDF document text
    • http://mumazidujinodu.epizy.com/adobe_reader_11._0._23_softonic.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/appcake_free_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/dawson_s_creek_episode_guide_tv._com.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/romurewarami.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/descargar_animedroid_s2_premium_apk.pdfIn PDF document text
    • http://gagelenobom.epizy.com/81488075358.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_off0000e007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE007 5392 bytes
SHA-256: 6c2ab921cbbd253aa313994d0f4e5263c0261d15908bcdae08f8a1fe204db86d
font_01_sfnt_off0000f241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF241 10968 bytes
SHA-256: 335ba6f0ace89b0846186dd332a5134b24ab50e5ce4fdc7cf2a8717def3f8166

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