Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aca7e48aeff6f43…

MALICIOUS

PDF

65.1 KB Created: 2021-02-16 18:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 2391c460b0b0d47f66b2c5f20ab08a9a SHA-1: d79a865e4251aefce2852043ad4bf2b07e2a0364 SHA-256: 2aca7e48aeff6f430c6e3a14de6ade2a269dcff033acd2aa5131f45f4559c83c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious URL, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the overall classification suggest the document is designed to trick the user into visiting a malicious site.

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://leonvi.ru/strik?utm_term=espiritu+de+dios+chords+and+lyrics+para+guitarra PDF link annotation
    • http://fivabigenarewo.22web.org/93744828871.pdfIn PDF document text
    • http://pifavobiju.iblogger.org/33461927713.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gulapore/juluju.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/ocarina_of_time_sheet_music_clarinet.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/adding_subtracting_and_multiplying_polynomials_worksheet_key.pdfIn PDF document text
    • http://sovezogodum.rf.gd/natobasi.pdfIn PDF document text
    • http://kamabutexukawiv.rf.gd/bushnell_velocity_speed_gun_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/italian_accordion_music.pdfIn PDF document text
    • http://xilidutajomode.epizy.com/gta_4_theme_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/tusibetawojo.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/jerakedatigigub.pdfIn PDF document text
    • http://bawavejukedosuv.epizy.com/booster_amp_output_transformer.pdfIn PDF document text
    • http://jamosafiseb.rf.gd/niruvufaziviti.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/9.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/85014271036.pdfIn PDF document text
    • http://koxosam.rf.gd/sleeping_bag_temperature_rating_guide.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_off0000bdb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB4 5396 bytes
SHA-256: c14d16c6a55de954801a9d7cb8f59b29ecdbfa1c7274f927ba95461fafd4ee10
font_01_sfnt_off0000d012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD012 11428 bytes
SHA-256: da2a2b6494eb299a439b93e8d173b60a45e6e56c62e9d05fac58b8887a770932

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