Malicious PDF — malware analysis report

Static analysis result for SHA-256 bccf64b46f855c30…

MALICIOUS

PDF

75.1 KB Created: 2021-03-31 16:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ae8b03f34d0f61592949d0b5ed4ce1f7 SHA-1: 120c1804e7c22b0c42e86fd3e16dc752f9001d8b SHA-256: bccf64b46f855c30fdf27d37f43acf9d14cbb11f64350bfd8895ac496a24e5ce
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. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://zajinet.ru/123?utm_term=doncaster+council+report+missed+bin+collection PDF link annotation
    • http://podarokinsta.site/vunikozadunus9q5w8.pdfIn PDF document text
    • http://lunesygets.xyz/six_of_crows_tv_show_release_datexj99b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451049/normal_5ffe274837641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425908/normal_6018693f31079.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459922/normal_5ff02250a986f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500911/normal_60283bbb4f25a.pdfIn PDF document text
    • http://keysecret.ru/what_time_do_walmart_black_friday_sales_start3qt4u.pdfIn PDF document text
    • http://bobakolanuvam.22web.org/t_sql_tutorial_advanced.pdfIn PDF document text
    • http://edevletorg.com/walmart_black_friday_11_14_saleogijg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413850/normal_6000e4a2a2acc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444850/normal_5fe2b138ef411.pdfIn PDF document text
    • http://fb-copyright-help-from.com/sword_art_online_games_ratedfbqw4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454304/normal_6053bf470e553.pdfIn PDF document text
    • http://domavera.ru/75087465602pywuy.pdfIn PDF document text
    • http://fogazino.iblogger.org/98014590638.pdfIn PDF document text
    • http://rollernefritmassage.xyz/9007932773860i1y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a5fc3680-5c08-4cda-bd6c-abaa3bdf25bc.filesusr.com/ugd/ea5d7b_4a5cda963d634419b08a41bff0a74080.pdf?index=trueIn PDF document text
    • http://levuvov.epizy.com/ibm_aix_fixes.pdfIn PDF document text
    • https://80b1f93a-fe74-4439-a81d-34814fa7a505.filesusr.com/ugd/e56fe2_c532554825d74bb0970d1f130156c66f.pdf?index=trueIn 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_off0000def5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF5 5356 bytes
SHA-256: f15bcf4edf5c638217f286669ef1b57a35dd9fc32d9a44bd1b319158fa086e13
font_01_sfnt_off0000f107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF107 1680 bytes
SHA-256: debaf3ff37cadd88e03f56a1da1b20b0676acbb0c2dfc7de7569b922f44b7b54
font_02_sfnt_off0000f954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF954 10968 bytes
SHA-256: 74988a8e91bfaa3d797516ebd1d3bfbd1317961b60d114897ceeb924f1149888

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