Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f6b1940121914d…

MALICIOUS

PDF

86.0 KB Created: 2021-04-03 07:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 67e9c44f855a054ada1e5045a9437ead SHA-1: b7a771dbaa8eea5dea6b322cf9ecf137a6199456 SHA-256: a6f6b1940121914d084009c4605fbce2f68da451a1d5b952d650a3ae715b1cee
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a 'customer centricity playbook'. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://golowaki.ru/award?keyword=the+customer+centricity+playbook+pdf PDF link annotation
    • https://cdn.sqhk.co/zapimafe/icgh0sT/zajumakine.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/cbZihbt/gamojuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/lefuwaregew/jgg8ljg/41417379680.pdfIn PDF document text
    • http://bufanono.iblogger.org/46282407436.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/iQUaziJ/71539959905.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/96712ae9-205a-4b5c-9971-5ac3560740ed/realtek_hd_audio_manager_equalizer_not_working.pdfIn PDF document text
    • https://27475d5a-2981-497d-8cd5-0c310ef10f8b.filesusr.com/ugd/9cb927_42738c5dda304f9eacffa54d283f9733.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/besafefaf/arithmetic_and_geometric_progression_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/cosmos_carl_sagan_livro_baixar.pdfIn PDF document text
    • https://e905e09d-7ddd-4aab-833c-73500e817873.filesusr.com/ugd/f4c08b_bdd2c12e73b8478da3b6cf488af9553f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9469aba3-5061-49ec-9316-f391304cb539/59020466907.pdfIn PDF document text
    • https://5e9c932d-19a8-4d5a-a970-d4bc0bcb832b.filesusr.com/ugd/bae0a0_a84294dd19784d0ea46183cf0931aa94.pdf?index=trueIn PDF document text
    • http://dodarululi.epizy.com/cakewalk_sonar_platinum_tutorial.pdfIn PDF document text
    • http://lolowavedipugis.rf.gd/blank_political_map_of_asia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b71961f-1a6b-4705-b111-085ff994503e/don_diablo_dj_mag.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/34992781850.pdfIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_5373cb8bfc3342afb35ea27e542c0e5b.pdf?index=trueIn PDF document text
    • http://xekubot.epizy.com/kitchenaid_mixer_model_ksm90.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/jolurapimibokovumijit.pdfIn PDF document text
    • http://bowubibegejojop.rf.gd/dazatixo.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/how_to_prepare_for_internship_interview_reddit.pdfIn PDF document text
    • https://f8340159-69ce-4309-ac43-521e9a8475b4.filesusr.com/ugd/bc0b97_525d3951035c46b491c24c8154dfa1e9.pdf?index=trueIn 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_off0000fbf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF0 5648 bytes
SHA-256: a7990fbd74586192e497f1f947dcfeb7d15235f87fde07fe4b47a0ddc955837f
font_01_sfnt_off00010efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFC 11332 bytes
SHA-256: 2881ff4efdf5344dd63121f02a261e8ebaf9ad1be95929003ca2b55afd4e9ad2
font_02_sfnt_off000135c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135C8 16136 bytes
SHA-256: 2df60db25c4006ebf5ce7f30ca7461b7931ff48239c1caafece913cf4cb3b6f2

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