Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22d88ad37728b89…

MALICIOUS

PDF

132.6 KB Created: 2021-02-27 14:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e73d67e9337f71275bd18129e0b19620 SHA-1: ee9fe311fc0b1439abdf4c9e59d396a6ac86d005 SHA-256: c22d88ad37728b8948ee02b66ce1c08550d5933abd28d9c94f8544eeefa2be8d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, appears to reference "Primera constitucion de venezuela 1830", suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jacksth.ru/strik?utm_term=primera+constitucion+de+venezuela+1830
    • https://static.s123-cdn-static.com/uploads/4368230/normal_5fcc60c1971b5.pdf
    • https://static.s123-cdn-static.com/uploads/4455377/normal_5fe23134f3cba.pdf
    • http://turoliwejaxafux.22web.org/jason_and_the_argonauts_movie.pdf
    • https://static.s123-cdn-static.com/uploads/4412592/normal_5ff7f6ba21e23.pdf
    • https://cdn.sqhk.co/xubewarow/iciadYg/gaped.pdf
    • https://cdn-cms.f-static.net/uploads/4422144/normal_60111b347bd98.pdf
    • https://cdn.sqhk.co/zakolemafemo/gjhagfe/lookout_tower_coloring_page.pdf
    • https://cdn-cms.f-static.net/uploads/4365549/normal_600f4ca0928d9.pdf
    • https://cdn.sqhk.co/samekikogeri/ciW6EHW/amc_movies_near_me_phone_number.pdf
    • https://static.s123-cdn-static.com/uploads/4375076/normal_5ff33e0424d25.pdf
    • https://static.s123-cdn-static.com/uploads/4383923/normal_5feba3aeab285.pdf
    • https://static.s123-cdn-static.com/uploads/4472764/normal_5fdd20ac62e16.pdf
    • https://static.s123-cdn-static.com/uploads/4369911/normal_5ff76c5851d81.pdf
    • http://zafufevede.iblogger.org/confidence_fitness_treadmill_reviews.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wexadelovatapox.rf.gd/badger_insinkerator_model_1_83_manual.pdf
    • http://xuxusemo.epizy.com/ravediresikijak.pdf
    • https://s3.amazonaws.com/zikeko/olympus_om_10_camera_bag.pdf
    • http://wazuvit.rf.gd/noco_genius_g3500_smart_battery_charger_manual.pdf
    • http://lizusesujujes.rf.gd/fazasuva.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001cbf4.bin
892aaba52a522b69ad5042ea1eb2d05ac487f740240b34390f91ae9dadee82e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1CBF4 5748 bytes
font_01_sfnt_off0001df7f.bin
3875bc04ba288dc093e3533694eb3060d1bb622204e1e66564067ecc76e1af1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1DF7F 11608 bytes