Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0e3cb888bd20fc…

MALICIOUS

PDF

70.8 KB Created: 2021-03-05 01:46:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9b43bceff3c424eaa7d168c70dbf68d7 SHA-1: a01dbe7ebe3c1ef71576c7f5fcc0167afe94959f SHA-256: 2d0e3cb888bd20fc2162a661f183631fbf5b860336f340471d5ec6629aa6c439
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. An external URI, https://ponafet.ru/wix?keyword=sift+heads+3, was extracted, suggesting the document's purpose is to redirect users to a potentially malicious site. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'sift heads 3', indicating it may be a disguised lure for a game or application.

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://ponafet.ru/wix?keyword=sift+heads+3 PDF link annotation
    • https://cdn.sqhk.co/mareduviger/8haicCy/us_box_office_records_all_time.pdfIn PDF document text
    • http://zasoremejoka.iblogger.org/section_8_company_balance_sheet_format.pdfIn PDF document text
    • http://mumejevi.iblogger.org/61652510912.pdfIn PDF document text
    • http://golesaluwo.66ghz.com/minecraft_pocket_edition_free_aptoide_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/sawowudin/rhh5Tgj/51009527026.pdfIn PDF document text
    • http://jazeforip.22web.org/the_binding_of_isaac_rebirth_linux.pdfIn PDF document text
    • http://kikotukujumosif.iblogger.org/how_do_you_use_a_fluke_62_max_ir_thermometer.pdfIn PDF document text
    • http://lakabusomasa.22web.org/expense_tracker_template_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/cidijic/43887172071.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fovuderes.rf.gd/86766757971.pdfIn PDF document text
    • http://kipenul.epizy.com/is_the_tippmann_a5_a_good_gun.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/schengen_visa_application_form_for_netherlands.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/94389033488.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/biomaterials_science_3rd_edition.pdfIn PDF document text
    • http://zogutofarori.epizy.com/32277141970.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/giramafegiraxaparajuvosu.pdfIn PDF document text
    • http://folapalej.rf.gd/whirlpool_thin_twin_washer_gas_dryer.pdfIn PDF document text
    • http://bakadukepafim.epizy.com/employee_injury_report_form_california.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/leminidekafetuberopukej.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/good_food_guide_bubble_and_squeak.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_off0000da7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7E 5136 bytes
SHA-256: cccb8579eb29799a7e0c527aab9f8ebe8ac9b217607645c63dc30426bf223b30
font_01_sfnt_off0000ebfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFB 10148 bytes
SHA-256: de75368d9a373bcc722149528c1ae4f77ac4e78b1ec6bbd54c3062ff7e23ab46

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