Malicious PDF — malware analysis report

Static analysis result for SHA-256 438493c089cbdc78…

MALICIOUS

PDF

76.4 KB Created: 2020-12-21 19:52:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 00401e5546f859fd0f776430c1938860 SHA-1: 1b1a771755800589eea41bbd07a3a05d036ea972 SHA-256: 438493c089cbdc783ac9c3dfa0764f134ecefd0a53fa9155524221417d5102bb
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/strik?utm_term=guide+for+one+punch+mobile+the+strongest+lineup PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409113/normal_5fba138587619.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413370/normal_5fd3dc0b03935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_5fc1e0a1baf4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448547/normal_5fdf1801aee1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408343/normal_5fd2c88dd63b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdc7d305fcdb718a17c69c1/t/5fdd04cb2641315525339351/1608320204099/aadukalam_tamil_mp4_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/batake.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/76648505184.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/age_of_wonders_3_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/rixomakukul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a7d55bcb0228a2a2fb4a/t/5fc7571293ad1a48121a173f/1606899475728/46746986400.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd13e27dd1bd0a76251a17/1606226914266/vortex_sparc_ii_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/uncanny_valley_trophy_guide_roadmap.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e60b27a199023ac2776a/t/5fcce012e43f2b00a8a78b20/1607262228611/nfl_standings_nfc_west.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cf3a5e8e827d428d5c84/t/5fc0e68a9b1ed03538fc7743/1606477450778/kate_spade_diaper_bag_black_and_white.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AA 5528 bytes
SHA-256: 2c0b5f7cbc46ed2c61fa79fa8e187cc5c261a70e0e75b9f373c9987605bd4b8a
font_01_sfnt_off0000eb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4E 10280 bytes
SHA-256: befce7a3a54cd675b6f8b9845ebf6ff7e1bc4551180b7a9dc2b547cc2c95fe21
font_02_sfnt_off00010ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECB 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

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