Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab2d75cc15f029f…

MALICIOUS

PDF

78.0 KB Created: 2021-02-24 09:15:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 766a93d6f05a9621264cdd4314655a7e SHA-1: dd5a3b2ccaabc44cdafa8730f28565b83299e9be SHA-256: aab2d75cc15f029f8008276a00649111a286ce88a51fc363add88666f7c56263
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that mimics a search result for a free audiobook, likely a lure to entice users to click. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the presence of external URLs and the nature of the lure suggest it's designed to lead the user to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/123?utm_term=never+eat+alone+audiobook+free+download PDF link annotation
    • http://hookup153.fun/pevopujasuruziwevn7ghm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484612/normal_600e321bbcc3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392659/normal_6034369a8aa8e.pdfIn PDF document text
    • https://cdn.sqhk.co/denepepunuja/f4Uidn2/oops_i_did_it_again_lyrics_clean.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/ChbXVii/tekunolawegazatis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423752/normal_5fdf47b354737.pdfIn PDF document text
    • http://itanah.space/best_student_award_certificate_formaty1f5q.pdfIn PDF document text
    • http://topfrag.rip/kezogikagupazadgsmi.pdfIn PDF document text
    • https://cdn.sqhk.co/bijilixiger/jjihphi/46862441989.pdfIn PDF document text
    • http://voicebftyi.com/ethical_values_in_report_writingn3ip6.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/zoxewudunigus/90705904838.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/pinixewilixirazowe.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/78290077526.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/rrb_stenographer_syllabus_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/bofoxerak.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/badapiritige.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/complex_analysis_mcq_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/49169578401.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/air_force_ones_white_and_black_womens.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/54132639118.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/ziserikegapafevuw.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_off0000f2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2ED 5048 bytes
SHA-256: 9c32279614e084c0a8ffe73363af9adff119ccbc509421a117db5b981115ebdc
font_01_sfnt_off00010447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10447 11076 bytes
SHA-256: d0f6691bdc9cc9446d43b36d8b0223fd846022b40337a1a7f9d856cf6ac350bd

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