Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dfaea32c7733dbe…

MALICIOUS

PDF

74.4 KB Created: 2021-02-26 12:14:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 597ea5173f9ead6d43ac00d65efa9744 SHA-1: 01c44e437247b7e3bce455544e018bddf12fc135 SHA-256: 4dfaea32c7733dbe2035bce25b101d00601b1db001c19884982a273df5cba6ce
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by multiple heuristics and a machine learning classifier. It contains an embedded URL, 'https://maypoin.ru/strik?utm_term=2005+f250+6.0+owners+manual', which is likely used to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a vehicle owner's manual, aligning with phishing tactics. The presence of multiple external URLs further supports the phishing and malicious intent.

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://maypoin.ru/strik?utm_term=2005+f250+6.0+owners+manual PDF link annotation
    • https://cdn.sqhk.co/pelotuwew/8hjxfrs/98219657043.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/Q9ibjaV/afterburner_sit_down_arcade_game_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/lajoroteb/jd9vZjj/thakur_prasad_calendar_august_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/wamiratena/chfe4jh/combat_flight_simulator_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/bokupajokim/hggeuaR/15251676473.pdfIn PDF document text
    • https://cdn.sqhk.co/woferomot/dicnVxp/fishing_diary_hack_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/Mqhaoih/23046468761.pdfIn PDF document text
    • https://cdn.sqhk.co/jimatoju/jFu1jfN/fonidukebivuje.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/jBzgcWe/wakaboxas.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/lokijuronig/cotton_eyed_joe_line_dance_step_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/vinyl_sheet_flooring_perth.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/55835094075.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/zenujupijubixaba.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_off0000e56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56D 5492 bytes
SHA-256: b06c1e2be1af96884ab2eb32b363645aa439b51395d55f5231234611dfb07374
font_01_sfnt_off0000f820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF820 10796 bytes
SHA-256: 6e67556e8478b580912669336844d13f11892ef2d4e1e84d16dffb970c8a0465

Open this report in the interactive analyzer, or submit your own file for analysis.