Malicious PDF — malware analysis report

Static analysis result for SHA-256 412218c74dfa8b30…

MALICIOUS

PDF

97.2 KB Created: 2021-01-25 07:51:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7baf42b845602dee20a5c0c83749bc6a SHA-1: 14ed6b6977e7a528a3d669638771c0ad8bde5b79 SHA-256: 412218c74dfa8b305583ef6bc751504e3c0e962e542ee426441ebc5faf2663f1
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs, one of which, 'https://trafffe.ru/123?utm_term=pasquale+buzzelli+story', is likely a phishing or malware distribution link. The document body, though heavily obfuscated, suggests an attempt to present itself as a story or informational content to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/123?utm_term=pasquale+buzzelli+story PDF link annotation
    • http://freedate18.xyz/fontspace_web_reviewn8vxp.pdfIn PDF document text
    • http://item-mask.top/collage_maker_for_computer_downloady40ra.pdfIn PDF document text
    • http://123dutch.com/little_foxes_full_movie_michael_morpurgook38f.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/h6gedzy/fastest_bowling_speed_in_ipl_2020.pdfIn PDF document text
    • http://zebinoleruf.iblogger.org/nusokujegopuzepenajazo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466662/normal_6006d5fcb6d0f.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
    • https://s3.amazonaws.com/vanatul/broken_vow_piano_sheet.pdfIn PDF document text
    • http://medesawawolujim.epizy.com/adfly_minecraft_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/todolist_abstractspoon_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/spotify_premium_ios_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/free_ebook_reader_for_windows_10.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_off000134f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134F7 4876 bytes
SHA-256: bd50746edbe2074e028466bd0eb1975ba8623dd57c71c446b718497583e4edcf
font_01_sfnt_off000145ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145AB 10684 bytes
SHA-256: 2e505ac390dc5b4fddbfbf835f7ac5e04b86a565198a31555bf5de40fc9a68a0
font_02_sfnt_off00016a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A24 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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