Malicious PDF — malware analysis report

Static analysis result for SHA-256 778ee8a7f3fbf269…

MALICIOUS

PDF

226.2 KB Created: 2021-03-17 06:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6c1d2cdb5efda49ab182506dd864c392 SHA-1: 9c0244c5754197aedf89f678e69b169519875522 SHA-256: 778ee8a7f3fbf269a9fdc415d4b624c38396578b1cf6675b66e2b27f32e71975
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9839

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://xajibur.ru/wix?keyword=soldier+guide+tf2 PDF link annotation
    • http://pobunav.sportsontheweb.net/wordly_wise_book_8_lesson_1_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/hmeofSa/college_football_live_scores_cbs.pdfIn PDF document text
    • http://retapadu.medianewsonline.com/is_jump_force_on_xbox_one.pdfIn PDF document text
    • http://jagodaxusix.iblogger.org/data_structures_and_algorithms_in_c_books.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinirumawe/hjRidjj/hepatitis_a_symptoms_timeline.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vekifaxofezawe.epizy.com/adobe_after_effects_text_animation_presets.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/bijavevobalukuzepaxa.pdfIn PDF document text
    • http://lowevuribif.epizy.com/dasaloroperum.pdfIn PDF document text
    • https://f867c6cd-7aae-4938-a634-6821dcb48262.filesusr.com/ugd/eb45fa_8f957339296b4bc7b86c918a5fe0a6f7.pdf?index=trueIn PDF document text
    • http://xokofenox.epizy.com/assassin_s_creed_full_movie_in_tamil.pdfIn PDF document text
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_eb3a21b4dedd466f828a1cc40558fbd3.pdf?index=trueIn PDF document text
    • https://03ca3561-abfe-48ca-9b59-b1b2b77f8126.filesusr.com/ugd/1af49e_bcc86dc5f4be41c9adf4b99f0abe93f8.pdf?index=trueIn PDF document text
    • http://fewuzefar.rf.gd/fanolubumufalenafarukut.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/15431528993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b0c176b-df3d-45a8-b6f1-86ead901f98c/strength_training_anatomy_2nd_edition_download.pdfIn PDF document text
    • http://fuxunowelujuxa.atwebpages.com/roots_of_quadratic_equation_formula.pdfIn PDF document text
    • https://c78ffd2e-fc3d-4272-86ca-968d835fb7ad.filesusr.com/ugd/0f9ef0_2dd5bf8846bb492799d0d5020e14e9da.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/dojinoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/175c7e57-3c19-4643-8f21-1cef9c23ff03/46562657197.pdfIn PDF document text
    • https://95e354e6-8561-4e52-807b-deb85f3b5fdd.filesusr.com/ugd/ca9b0a_7035886383de41efbe134bf9de3ba641.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/41093625230.pdfIn PDF document text
    • http://zedebegeku.myartsonline.com/technical_drawing_textbook_for_secondary_school.pdfIn PDF document text
    • http://zewadomi.myartsonline.com/4045354772.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/ultimate_comics_spider-man_kim_jest_miles_morales.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_off00033f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F9F 4924 bytes
SHA-256: 43151aef12328871169b43796e9a93728bece1ed7c1f7d8f20a4b05fc11f32da
font_01_sfnt_off00035071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35071 12128 bytes
SHA-256: 56885fab6a3a7a86571d24cfb606cd9bdc2e63deaa6e9588536938bf35a48acf

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