Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cee25530b59ce30…

MALICIOUS

PDF

79.4 KB Created: 2021-03-04 02:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: a822c0a6946ba936e3f50ffafc03acb8 SHA-1: 5e917b0e76d34aba6e7033b82eaab5b5c5c2aae7 SHA-256: 6cee25530b59ce30fa5448152f1e6ec54c54156304a420ce6854a16bff1988a2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://nipisod.ru/strik?utm_term=casio+protrek+manual, suggests a phishing or scam attempt, likely disguised as a search result to trick the user into visiting the site. No scripts were extracted, but the PDF structure and URL are strong indicators of a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/strik?utm_term=casio+protrek+manual PDF link annotation
    • https://cdn.sqhk.co/zewesifadeka/UXKfGgi/easy_language_translator_for_windows_10.pdfIn PDF document text
    • http://ing-cliente.com/disney_cello_sheet_musictxz4v.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/aeycjil/2662414827.pdfIn PDF document text
    • https://cdn.sqhk.co/wumidimux/hcoqaUm/62785372952.pdfIn PDF document text
    • https://cdn.sqhk.co/daguvemet/dgi3z3U/74167535683.pdfIn PDF document text
    • http://bijepitujutix.sportsontheweb.net/how_to_file_a_corrected_confirmation_statement.pdfIn PDF document text
    • https://cdn.sqhk.co/tufiroxova/janSwhd/vodafone_yan_mda_bana_ne_var_internet_hilesi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://muzulozak.atwebpages.com/a_brief_introduction_to_fluid_mechanics_student_solutions_manual_5th_edition_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/41977726185.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/washington_redskins_new_name_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/advanced_technologies_for_intelligent_transportation_systems.pdfIn PDF document text
    • http://jokosen.atwebpages.com/pulagudifuropowajalawij.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ede5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE5 4936 bytes
SHA-256: d65c3b8010a0ea25f27087195bd8cbbf2c6662b6c6aadfacc88154ef1399145c
font_01_sfnt_off0000fe9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9D 10204 bytes
SHA-256: 29dde25e15322d646e4ea74049d091aeeb508c6049fb8f4f2693533e9a9f11f0
font_02_sfnt_off000121b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121B0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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