Malicious PDF — malware analysis report

Static analysis result for SHA-256 69bdc774a1916bc4…

MALICIOUS

PDF

76.1 KB Created: 2021-03-30 02:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c1c5cab8e89290ba3676c3adc9e92418 SHA-1: 13e3fcae150acda67f8a30335ef59eb075a14e19 SHA-256: 69bdc774a1916bc49f988d5720df24da53c37bf4927cd119906f6379343b27f7
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of the malicious URI strongly suggests an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/wix?keyword=kurtis+blow+these+are+the+breaks PDF link annotation
    • http://all-gopro.com/fipiznwv4r.pdfIn PDF document text
    • http://padojobimo.mywebcommunity.org/18132147048.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/bermuda_triangle_book_in_marathi_download.pdfIn PDF document text
    • https://cdn.sqhk.co/ninubisidire/ZBebFFt/e_news_casting_calls.pdfIn PDF document text
    • http://hookup158.fun/how_to_check_awa_score_gren20hh.pdfIn PDF document text
    • http://alteramaks.world/tasugelawujotmtek6.pdfIn PDF document text
    • http://salizurewaki.mypressonline.com/genetic_algorithm_optimization_problems.pdfIn PDF document text
    • https://cdn.sqhk.co/rafumufo/iigjdBN/bapepufiganinaxezemireki.pdfIn PDF document text
    • http://vuvabadiredowa.getenjoyment.net/pilot_aptitude_test_books.pdfIn PDF document text
    • http://sosed.market/sample_lesson_plan_in_forms_of_business_ownershipaybkn.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/lupebesu/bezowirimikovemilasaniwek.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/2005_mercury_150_xr6_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/bharathiyar_kavithaigal_in_tamil_with_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/diary_of_wimpy_kid_book_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/69844491193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af34570-4b62-4ca9-86f5-9a979999dc99/26926745697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66661a63-703f-4256-a3dc-2bdbe327a418/common_core_sheets_grade_5_fractions.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/guganojavodafijapapoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/befc581f-27ab-4ea6-b22e-0cd333be0f7b/riwirazirodot.pdfIn PDF document text
    • http://solezod.myartsonline.com/91972500262.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/53060925044.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_off0000d7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DB 5040 bytes
SHA-256: 93c3cb2627659c7273a506cb43daf90dbc97a6cfd0fe1b4cd7978f6b219e4486
font_01_sfnt_off0000e905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE905 10388 bytes
SHA-256: 22f9c0cc28db0155cb1b02f6e4f7f08d500cae4dc2ed89666640632e0beacac1
font_02_sfnt_off00010d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D06 16392 bytes
SHA-256: 954f30c1cce2e3a00f07cb0ababb04bf86a3a3c34ed8da2fc782bdc014231390

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