Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff34f6a0de6b697…

MALICIOUS

PDF

80.9 KB Created: 2021-04-16 04:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6683a903d91c72fca94b6466d0f3c0f5 SHA-1: 729dde4477fada95855da67bf7500a8437e023b5 SHA-256: bff34f6a0de6b6977b46b0122107f1c223e3d3dcde1ee80382fa23df2b13325e
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-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://fokemale.ru/strik?utm_term=how+to+obtain+coroner%2527s+report+uk PDF link annotation
    • http://xadakid.22web.org/tata_sky_telugu_channel_number_list_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://julatelowix.rf.gd/84199732486.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17568bb6-3543-4db5-8ac2-0075985b4564/bosch_vision_500_series_washer_not_spinning.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/41038457799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67aa1e51-a2f0-47b6-8b48-5e31d4b25c36/wazotemufozetisamobuk.pdfIn PDF document text
    • http://xabulupemoze.rf.gd/haier_mini_fridge_with_freezer_cold_settings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/631dc475-106f-448b-a238-52e1cfdb9f70/wivowijipilafederim.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/lojokokijobigokok.pdfIn PDF document text
    • http://negatesuxa.epizy.com/free_online_ocr_convert_scanned_to_word.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/messenger_platform_l_g.pdfIn PDF document text
    • http://rozesefotuduwef.epizy.com/enfermedad_de_chagas.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/kawapotukaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f00534dc-1515-4a77-906f-d03cb057126f/turtle_beach_x32_transmitter.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/hamilton_beach_dual_breakfast_sandwich_maker_with_timer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2568dea2-9975-4d4e-be86-8b2f63bfb2a6/how_to_program_tork_rz307_timer.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/merchsource_projector_entertainment_ii_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e43b61d-1cb1-4bfa-a4b3-a6d950dbd986/pc_troubleshooting_pocket_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/bundle_savedinstancestate_meaning_in_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f070c9-6e77-4462-be52-95994a82a89b/what_size_round_does_an_ar-15_shoot.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_off0000ff1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1C 5184 bytes
SHA-256: d754379f72c8e0a2ed7d15febf16e18645811e16fe2b8e543051ea26823b3525
font_01_sfnt_off000110e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110E1 10712 bytes
SHA-256: a731acaeaccb9c72ed0cf6297d33d05547c72bcafa0d1d2872acf0ac0f0ad2eb

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