Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa499a66a54fcfe0…

MALICIOUS

PDF

76.6 KB Created: 2021-03-18 19:24:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 575a9edc450d7324e3e909c0f9b3096a SHA-1: e887017943cf6bf22ba10151a9e675c6c7009c73 SHA-256: fa499a66a54fcfe0e5fd0b2e54d1a74fcc0d8f683285778c4fc4451f4e855c5a
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 ClamAV and an ML classifier. It contains an embedded URI pointing to 'ponafet.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'Blade and Soul 2 part', suggesting a lure to attract users to the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://ponafet.ru/123?utm_term=blade+and+soul+2+part PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402936/normal_604d8622b7e33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387811/normal_5fede011a2fb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_6026c25dc4091.pdfIn PDF document text
    • http://bukipumil.mypressonline.com/capital_budgeting_process.pdfIn PDF document text
    • http://gusevoxuzuwelap.mywebcommunity.org/74448103732.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476427/normal_5fc9607b52354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393364/normal_6029523c27d93.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/abhijit_banerjee_poor_economics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/99b14d55-c8eb-4e71-862b-d6bd01d5a946/why_gospel_of_thomas_is_rejected.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/is_evenflo_tribute_faa_approved.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/38463700772.pdfIn PDF document text
    • http://gipetiwivi.atwebpages.com/jeevan_lakshya.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/bizalaxunakevuzog.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/gowujodopiloleburit.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/27094871733.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/ix5000_cisco_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/pebafovapaxatefinome.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/cants_5_form_illinois_dcfs.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/boss_film_ke_gane_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e8a87c1-377b-456b-8223-662556d42334/how_to_make_a_training_manual_in_word.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/conversations_with_god_book_1_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/69935477150.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_off0000e146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE146 3028 bytes
SHA-256: ba69f3be2961159349e3515e4ccc7b3becf154184133caeab513d2bbb979c674
font_01_sfnt_off0000ec0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0E 5132 bytes
SHA-256: e4a69459283b839cea4677c2be3a6683e3bc56d5f31842fdb1a737926f4f4c55
font_02_sfnt_off0000fd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD99 11960 bytes
SHA-256: 2bf361aa8e449931de917b31692174f68793164024e82e3a8077552856adc9df

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