Malicious PDF — malware analysis report

Static analysis result for SHA-256 095e56c774fd9586…

MALICIOUS

PDF

78.5 KB Created: 2021-03-06 12:05:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d144f3b59d9fd1ec7418f2f2e72b2483 SHA-1: c9dd08b3d63209f791b946ab5016f4bb9955aca4 SHA-256: 095e56c774fd9586a9289e8a158983852bd98b09e4a78c2f9bcd0d68a07b701d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains embedded URLs that lead to suspicious domains, suggesting it's used for phishing or to download further malicious content. The document body, though heavily obfuscated, contains references to 'book pdf' and application details, aligning with the lure of providing a downloadable file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/strik?utm_term=the+speaking+psycho+book+pdf PDF link annotation
    • https://cdn.sqhk.co/zezetemirag/oihalhe/lemafi.pdfIn PDF document text
    • http://vukuradi.mygamesonline.org/reading_comprehension_3rd_grade_online_practice.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/gcT5eij/battle_strike_force_stallone.pdfIn PDF document text
    • http://viruxego.mygamesonline.org/sabejinalexopezowe.pdfIn PDF document text
    • https://cdn.sqhk.co/subetudagoli/ahiVih5/64239734506.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/f01ha3k/fozarudurasav.pdfIn PDF document text
    • https://cdn.sqhk.co/pagozixupezi/coUJlmL/free_online_music_education_games.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/fogodununejiwakexovox.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/Lgfjavc/6ix9ine_runner_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/Euhhajb/8838454229.pdfIn PDF document text
    • https://cdn.sqhk.co/nivavepe/dMjhfhe/fox_deportes_usa_live_stream.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/fosalizuzu/88418781423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f590495-8bfa-4d7a-bf22-8fa816ed42b2/save_your_second_marriage_before_starts.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/dufosejoxonumovinutori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9c3a88-2b35-4101-a4ae-56ce178679a8/25922856923.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/3_week_look_ahead_schedule_template_xls.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/exercise_stock_options_tax_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/chrome_for_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/uc_browser_7._8_free_for_java.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/93604804023.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/how_to_wash_hair_dye_off_skin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce58b9e8-b4fd-44e1-a046-9e883e4b0081/wonoruponalebuvixawol.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/3384398731.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_off0000f564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF564 5544 bytes
SHA-256: 8997e704a839ec07df53dd28702b256acf8afa0943adf05c24ddad36c43b0d41
font_01_sfnt_off00010843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10843 10532 bytes
SHA-256: cfc72365960a365c56669211fbbee60ce15873a22b577e5eb7b1f30a273cd200

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