Malicious PDF — malware analysis report

Static analysis result for SHA-256 91656e1a755ebf06…

MALICIOUS

PDF

81.7 KB Created: 2021-03-16 07:17:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3d9e681bac9d8e39babaa5a8c07fd42b SHA-1: ea8bc17bdbda99d257dd1ce3818aff3c98085774 SHA-256: 91656e1a755ebf067ce53a7eeee98673e20532e50572fb98a282226b3ec7d99d
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://vilenefex.ru/wix?keyword=william+barclay+daily+study+bible+pdf PDF link annotation
    • https://cdn.sqhk.co/xuwadezab/NHhjwlr/new_york_times_crossword_mini_archive.pdfIn PDF document text
    • http://zufunepel.iblogger.org/yoga_poses_to_relieve_gas_and_bloating.pdfIn PDF document text
    • http://lazokiwumemo.mygamesonline.org/81698446510.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/EgjGbhj/tiktok_videos_not_on_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465564/normal_6015543b18bbd.pdfIn PDF document text
    • https://cdn.sqhk.co/bikugipozamu/iagegeW/rawunijan.pdfIn PDF document text
    • http://pobunav.sportsontheweb.net/tiwubadavugonavojodena.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/Vh4FhfX/christmas_hair_salon_210.pdfIn PDF document text
    • http://kudusakepupa.sportsontheweb.net/nigerian_gospel_praise_and_worship_songs_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418368/normal_60198ee2c9d43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454682/normal_5fcf2e7fd61e3.pdfIn PDF document text
    • http://gesetaxoxu.sportsontheweb.net/python_base64_decode.pdfIn PDF document text
    • https://cdn.sqhk.co/wotirixa/gijTXt4/wesitijinupoturekibeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491175/normal_6044940ff354f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://belunovozexuse.rf.gd/vevawutimajejodowemiwan.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/31413310964.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/bollywood_song_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/vupogemoxowovabuz.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/pool_pilot_digital_nano_customer_service.pdfIn PDF document text
    • http://jelazib.epizy.com/wazofozimubetoximakuxipa.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/zajabafomiraxapekof.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/1870391.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/vukuwufekerori.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f01b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01B 5224 bytes
SHA-256: 5f84648da30996a4c366a97517917a269a9c1ded2ab9ddeb670a1c7224c038ec
font_01_sfnt_off000101e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E8 12392 bytes
SHA-256: 423cb0858c15cedb90b1df51ecffcd70a526f48c6e2d6af5c17338ab15807ed8
font_02_sfnt_off00012ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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