Malicious PDF — malware analysis report

Static analysis result for SHA-256 f62f7a54490ede40…

MALICIOUS

PDF

76.6 KB Created: 2021-02-07 10:16:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 52f444616e02ac253afcb42400ef8863 SHA-1: 8ae8f9245d9e9bc20077ecfa1d97fbb499608b72 SHA-256: f62f7a54490ede40b0fcde45484522898207cf30b8fcef7607b3965d417057e1
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though truncated and obfuscated, suggests a lure related to 'Segunda guerra mundial pdf causas' (World War II PDF causes), aiming to trick users into clicking the malicious link.

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://druttle.ru/123?utm_term=segunda+guerra+mundial+pdf+causas PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447253/normal_6004b7bc5170a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374198/normal_5feb43dd059d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461761/normal_5fe2c34465f9a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481522/normal_5fe17efebeea6.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/faxaxos/neumonia_pediatria_colombia.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/additional_maternity_leave_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/jacob_collier_hideaway_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/87976689395.pdfIn PDF document text
    • http://suvowafavij.epizy.com/android_data_recovery_chomikuj.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/aspersora_manual_jacto.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/tai_game_kick_the_buddy_apk.pdfIn PDF document text
    • http://tirinito.epizy.com/memupijopaxekog.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/oecd_guidelines_2017.pdfIn PDF document text
    • http://liruvumud.rf.gd/baby_poo_colour_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/contract_agreement.pdfIn PDF document text
    • http://kiduvunizujenav.rf.gd/bee_movie_screenplay.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_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 5580 bytes
SHA-256: bfe66d49644e9c54dc3ca37f492f7d5cbe4c3d8abaca48d1fc53717f5a6600af
font_01_sfnt_off0000fdb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB5 11876 bytes
SHA-256: 1398653e56ba4c2a7fb60d6406228670b36ab47bf48e8a3e43372ff4cee14df3

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