Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb2ac914cad38f7…

MALICIOUS

PDF

71.2 KB Created: 2021-05-22 20:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7a1147c8295f92d2ef8bd2999db4800d SHA-1: 924fbff64e353c185b4539e4ac014e2d0838bf78 SHA-256: 2bb2ac914cad38f7ead94343a6504212559f98fb3805eac919621fb072ffcdfb
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 0.9998

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://jacksth.ru/strik?utm_term=ukulele+fingerpicking+songs+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eada8da-9dd5-4a78-b24e-d0aa89574167/what_is_the_best_graphic_design_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfbe6618-f180-46db-aabb-fc863ec686c8/77146789002.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/what_is_a_centrifugal_force_ap_human_geography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c8b68b7-8e74-45a5-96dc-278958907753/13255688321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cb137ba-1467-4b3b-bfd4-5dc8708eb468/why_was_discovering_america_important.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c259319-acb9-4068-9179-c243f225b275/sharepoint_designer_2013_workflow_change_permissions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab860bdb-2217-4bb8-bf84-67c46a817533/how_long_to_60_classic_wow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aacde96-d499-42aa-965d-ba0d18c9a0d3/jolly_phonics_group_4_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/autocad_3d_drawing_commands.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/712d6b96-2e65-4c31-9f32-aeffe12b7422/organic_chemistry_some_basic_principles_and_techniques_class_11_ncert_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52f9178f-e78a-48dc-9f6f-2227bc54eae5/crossfit_strength_training_program_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/ninufesupafelavegidimov.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/how_many_games_of_life_are_there.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52021e61-648a-474e-811c-d495742c6e42/cisco_telnet_commands.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a149b5-6fbf-46df-bca7-2426c3db5b9d/57701730757.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/12700176898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7711f97a-a8cf-4126-9a12-dc55ff6e5736/zalesub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1688921-851c-4b9b-9ac7-e689c69fcacf/95219324894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4893bc2-d2b0-411a-adf7-90f7a72426c7/f_table_to_find_p-value.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_off0000dafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFC 5168 bytes
SHA-256: 70a28787d4138de31c25f97bb49953be57dcc89ce848171dda2116dc96c1c95d
font_01_sfnt_off0000ecb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB6 10248 bytes
SHA-256: 38dc552bc18dde048f5242ec3d29eb510548d3bceb61cefc68aff8fc2602d3ac

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