Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c03df09f2be906…

MALICIOUS

PDF

214.3 KB Created: 2021-01-11 18:22:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2f5b86e47c6387ebf6e3ebba9d38c9d7 SHA-1: ab204feea3812bbc165e4ccbb9f68bda727c806e SHA-256: b0c03df09f2be90618c10fa94c14a9d4df3e9d0a282d30e749b5cebd0ae1b375
96 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 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 0.9947

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://trafficel.ru/aws?utm_term=bullet+journal+calendar+templates PDF link annotation
    • https://site-1245455.mozfiles.com/files/1245455/xajovetikamu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_5fba49bcf11ea.pdfIn PDF document text
    • https://site-1171564.mozfiles.com/files/1171564/acellus_reviews_high_school.pdfIn PDF document text
    • https://site-1176685.mozfiles.com/files/1176685/clear_samurai_2k04.pdfIn PDF document text
    • https://site-1178449.mozfiles.com/files/1178449/police_officer_killed_in_st_louis_video.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493597/normal_5ffa931d7b0a3.pdfIn PDF document text
    • https://site-1176481.mozfiles.com/files/1176481/golden_shopping_arcade_hong_kong.pdfIn PDF document text
    • https://site-1173625.mozfiles.com/files/1173625/79027179555.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369638/normal_5fc86f6a855c4.pdfIn PDF document text
    • https://site-1179780.mozfiles.com/files/1179780/33701583125.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/30520702577.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/huy_nguyen_md_mass.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/do_enterprise_rewards_expire.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/video_er_free_online_mp4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002f439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F439 5344 bytes
SHA-256: f107ae592f8b31e8051b4bb5c26fb92d3e3fa77647cd8cc2d521c28ca934cc90
font_01_sfnt_off00030647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30647 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00030ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30ED4 10988 bytes
SHA-256: 1c0d3fb6534dc37bab5b7061a542f9cd2019922474e0a499240a536a66d63641
font_03_sfnt_off0003346e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3346E 16660 bytes
SHA-256: a361abef9bd6614270ee78402abd4d604954a3d662fdeaa25239d8f4e4827fcc

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