Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbc6e9f707606f65…

MALICIOUS

PDF

70.8 KB Created: 2021-02-05 11:14:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 2406ae6a532d701bbee05873cb0ceb8a SHA-1: c6a2fabfaa4563ed90b88287f10fa70d203c3638 SHA-256: cbc6e9f707606f653a0ca0703dc45d984d7b835d2630cf8c866bd950218d30dd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, includes text related to 'Sci-fi city map generator', suggesting a lure to trick users into visiting the malicious URL. The presence of an external URI and the ClamAV detection strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=sci-fi+city+map+generator PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481999/normal_5fe196d4ca150.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415770/normal_5ffe4ff18205c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488339/normal_600bb2c08740a.pdfIn PDF document text
    • http://7lessons.space/ancient_mesopotamia_map_worksheetcr2yi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451929/normal_601b44407d571.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495402/normal_5fee8c6cbdd0d.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/idhahdu/sandisk_memory_zone_app_for_ipad_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/pK2OieR/withings_blood_pressure_monitor_instructions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391302/normal_6011c6fc1e309.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/xonaxevetaf/96288904896.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/happy_birthday_sheet_music_piano.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_off0000cfdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDF 5360 bytes
SHA-256: 2ea9e5dad39a7d8c5f138d52551e8f94102a9f515023c2eed04772b09d286ef1
font_01_sfnt_off0000e218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE218 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000eaa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA5 10620 bytes
SHA-256: addadb37d2d0cfec4c6cd429dce8706fdafc6fc85facb7bfb4cae9d360e30e24