Malicious PDF — malware analysis report

Static analysis result for SHA-256 0628adc86cc86dc0…

MALICIOUS

PDF

88.6 KB Created: 2021-03-23 06:08:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1b3cbe196afc2caece795bc6f22eb86c SHA-1: d5aefff45ca55b3754c77c47c202ef159026c146 SHA-256: 0628adc86cc86dc0ec4a856f915c6d7970e68cf8d0a08395cb42994ab07a5fe7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to malicious content.

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://xezojetit.ru/strik?utm_term=queen+piano+sheet+music+somebody+to+love PDF link annotation
    • https://cdn.sqhk.co/kosojevevoxo/igemtq9/53958729151.pdfIn PDF document text
    • https://cdn.sqhk.co/kudozaporuro/8fggjbu/civil_war_battlefields.pdfIn PDF document text
    • https://cdn.sqhk.co/pamomusemida/Jjj6TGQ/sokatuki.pdfIn PDF document text
    • https://cdn.sqhk.co/padasagam/ifUOBjc/mod_maker_pro_for_minecraft_pe_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/puburikob/e2heijR/siren_head_mobile_gameplay.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/mozedijiz/69214344561.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/71921422532.pdfIn PDF document text
    • http://gikuxoxabak.epizy.com/classic_vocal_warm_up_exercise_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/5020564201.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/pixigoxewamo.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/24238313595.pdfIn PDF document text
    • http://lupemuvuxetamok.epizy.com/multiplication_chart_up_to_30.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/lcci_level_2_past_paper_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/garo_vanishing_line_episode_guide.pdfIn PDF document text
    • http://sajonagot.rf.gd/robotics_engineering_basics.pdfIn PDF document text
    • http://woxutubutofewev.rf.gd/18111224209.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/planet_earth_2_theme_sheet_music.pdfIn PDF document text
    • http://vodividubo.rf.gd/the_magic_number_seven.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10637 5580 bytes
SHA-256: 0e75f7c80f5bc5e4c139a50700b30a8d985194f3cc190f4222237d86dac304d1
font_01_sfnt_off00011908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11908 11320 bytes
SHA-256: 2cd1a5d882ec9880a057c16e27ed9835abee50adf5149f5a01a21a6bce5dfd99
font_02_sfnt_off00013f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F62 16100 bytes
SHA-256: d973db94ba2c448c661c26f08d051ac794e7cb4f3c7daa33c2141e8036f071b6

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