Malicious PDF — malware analysis report

Static analysis result for SHA-256 069bf209411ab0ba…

MALICIOUS

PDF

92.5 KB Created: 2021-03-03 10:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ef33145fec0f6ddb20140bbf9d24889a SHA-1: aa5b741e6d3e8a6740e2d76a46a2ec41fe8dc006 SHA-256: 069bf209411ab0bab3d3b665ee1fa3dfafe4ba6f995c4d78f2026897ce71e47e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious external URL, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a 'guide'. The presence of an external URI indicates an attempt to redirect the user to a potentially malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=guide+to+the+bodhisattva%2527s+way+of+life+berkeley PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4456999/normal_603536f2862a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417040/normal_5fdc6f88f1149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454052/normal_5fdba3582aeef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388432/normal_60253ab819eb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389801/normal_60006c4b3c1f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463538/normal_603e1ce5c6803.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412181/normal_6023341cc929f.pdfIn PDF document text
    • http://berilunowalaz.iblogger.org/gamitolekinuliful.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/kujapomib/rurepubomufurazik.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/cinema_hd_android_4._2.pdfIn PDF document text
    • http://gigapenawer.rf.gd/zoxag.pdfIn PDF document text
    • http://jibavorom.rf.gd/bowmasters_apk_mod_money.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/acetate_sheets_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/defiant_in_wall_digital_timer_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/minuet_in_g_beethoven_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/lofifonanor.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/fijeguvunopib.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/bodaxiwozete.pdfIn PDF document text
    • http://zojasofox.epizy.com/shapes_pattern_worksheets_for_grade_1.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_off00012f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F6E 5516 bytes
SHA-256: cd8484b4f8d374a74cc1ff9aaffb6a5d8ec0a206fa48f615ea3a31a727fa67c2
font_01_sfnt_off0001424a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1424A 9980 bytes
SHA-256: bd03b3359dbb4351508215b271ae730e3f5e0c9be5f90d1dd8b0a332ba9bb6d2

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