Malicious PDF — malware analysis report

Static analysis result for SHA-256 405b2897a079af2e…

MALICIOUS

PDF

83.7 KB Created: 2021-03-06 15:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2bb348f0f15e50bfd951d3c804ba6bd7 SHA-1: 8aa4627338740bfd7cca10d782467b960f633358 SHA-256: 405b2897a079af2e2148367580645c44ccd4716d880c1a05db49761bd2fa7b7f
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 0.9997

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://baarspo.ru/wix?keyword=exponential+graph+transformations+worksheet PDF link annotation
    • https://cdn.sqhk.co/savageven/3hfkfgg/letedujinaturigakike.pdfIn PDF document text
    • http://nukowivoxom.iblogger.org/pugiwuwodet.pdfIn PDF document text
    • https://cdn.sqhk.co/kodivitedi/ghrR9ua/seaworld_simulator_ride.pdfIn PDF document text
    • https://cdn.sqhk.co/jezofadu/WLmdUhc/pomow.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/nonomipizirevevugozoni.pdfIn PDF document text
    • https://cdn.sqhk.co/wusoxopejezo/jiggife/limbo_android_walkthrough_chapter_5.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/bitcoin_price_today.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/xedewofuretujo/35088469422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a786909-fef4-4bc7-b0bc-f4cba0633878/how_to_get_the_baseball_bat_in_gta_5_online_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/eliminating_wordiness_exercise_3_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50edd7cb-020d-42e7-9062-45420eece413/dios_sea_exaltado_letra_y_acorde.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/the_thyroid_diet_book_free.pdfIn PDF document text
    • http://kexijilavagela.rf.gd/abba_chiquitita_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/wevedo.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/22200457567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cddf2c7-5551-4999-9e82-933fef86e890/how_to_make_a_laboratory_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a296597-ab27-49dd-9136-316a31f982ee/download_driver_audio_hp_pavilion_dv5000_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/snowbasin_ski_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/bhavesh_joshi_movie_hd_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34b65278-491a-4816-b247-e01293fa26b5/esl_writing_exercises_for_beginners.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_off0000f3db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DB 5496 bytes
SHA-256: bc93fe397a40ed7b8c8894c44909537b3c7047d3162a299ee2b4f2a7e0f0f84e
font_01_sfnt_off00010680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10680 10636 bytes
SHA-256: 507a4d7c06826798b2ceda3e47df7323e7f8694f30ec3ac7934c15c88ae936bf
font_02_sfnt_off00012ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD9 16496 bytes
SHA-256: 3152a5cc62a8006e78a90f51c4d2da3a3b3bd5ae85a2e0f7977b3a5956cb279b

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