Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea13f96db7d5786…

MALICIOUS

PDF

73.7 KB Created: 2021-02-13 14:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 47d99d448f699fff9c12c655c4846604 SHA-1: 4478402fc213cfdadf5f7f2a3d44eb9286c33e3f SHA-256: 5ea13f96db7d57864df8ad320ef7a7a7a9ba6a3631c1fe45f549798b27187a29
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a book title, aiming to trick users into visiting the malicious URL.

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=theodore+boone+the+fugitive+pdf PDF link annotation
    • http://palitra-cveta.ru/312311162698otf9.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/gL8Vunu/ants_in_house_remedy.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/hcgdgcB/english_20-_1_reading_comprehension_practice_test.pdfIn PDF document text
    • https://cdn.sqhk.co/jemajujo/8ghjftn/pusagewevuvu.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/jdiffhd/vampires_vs_the_bronx_cast_age.pdfIn PDF document text
    • https://cdn.sqhk.co/mifijizudi/gihesia/wosifiwupijexudumim.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/dgdjirj/filters_for_instagram_stories.pdfIn PDF document text
    • http://zotusomadelisok.22web.org/toram_online_xtal_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/ia6aigg/walking_by_faith_bible_study.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/pjd1Gic/womawojudodosutipakeja.pdfIn PDF document text
    • http://kkkirrreeee.space/fox_news_us_stock_market_todaysf27m.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/pubopelej/54598810103.pdfIn PDF document text
    • http://sudemididesiz.epizy.com/bodezusanatelavolu.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/punctuation_exclamation_and_question_mark_worksheets.pdfIn PDF document text
    • http://sapakebozo.rf.gd/zazuwiwutexizapulopated.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/galaxy_watch_android_os.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/terraform_hcl2_expression.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_off0000e438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE438 5032 bytes
SHA-256: b054e721226378f92d7dd10a2fa75df5a27b7983d0f96c09316aa78ffd773f30
font_01_sfnt_off0000f559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF559 10688 bytes
SHA-256: 7d5ab1c68df509cc3175e9dfd0a0366d66a2948b86dc6eac965a814b6f0a6321

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