Malicious PDF — malware analysis report

Static analysis result for SHA-256 81b0620969aa318f…

MALICIOUS

PDF

80.5 KB Created: 2021-04-29 14:24:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 79925cca8a1209cc1cd6cd7c9b451eff SHA-1: 12491b2f1299d6f32b19486c951a89beb07fab99 SHA-256: 81b0620969aa318f85f9f38548cad6af5d05691292c57fd0daa05286011907c9
96 Risk Score

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://druttle.ru/strik?utm_term=what+is+forrest+fenn+treasure PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374979/normal_6066389a37fde.pdfIn PDF document text
    • http://zozitaze.mypressonline.com/swot_analysis_of_nestle.pdfIn PDF document text
    • http://nodefiw.medianewsonline.com/22337345876.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/fQqgfhw/wexijodogaj.pdfIn PDF document text
    • https://cdn.sqhk.co/sowumavag/djaidQN/english_songs_90_lyrics_status.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/JHMjepo/seven_letter_words_starting_with_sa.pdfIn PDF document text
    • http://kerufeki.22web.org/jazz_blues_scales.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454042/normal_5fd16ec18f099.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zigetolerup.epizy.com/jedowulibexulabenakuzope.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/purushan_enakku_arasan_full_movie.pdfIn PDF document text
    • http://xilavivugup.epizy.com/bitlocker_drive_encryption_free_windows_8.pdfIn PDF document text
    • http://keporumutiwem.epizy.com/article_review_example.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/pathogenesis_of_irreversible_cell_injury.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/hp_1320_toner_light_flashing.pdfIn PDF document text
    • http://fetenebepoxoso.epizy.com/99651817747.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/45502467783.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_off0000fe2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2F 4836 bytes
SHA-256: b4d777f83e3285196db98ac84568e5f183fcca0a82a43d7911f4842221ae2b63
font_01_sfnt_off00010ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA6 11384 bytes
SHA-256: 3a5f9b4d7c713846d6a0e2c61ed103504710334b895adf159edd6c51d0a63d40