Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f07b2edc95b62e2…

MALICIOUS

PDF

70.8 KB Created: 2021-01-27 09:30:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: bc51159858e95dbdc99782a4af2c9578 SHA-1: a2d14598088afc3e925734e63a01eaba5f540e34 SHA-256: 4f07b2edc95b62e2775c5a60f0dfa8a1159397cb98c7a40a85b9723fbc70d314
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, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a 'world cup final 1990 referee' search query.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/wb?keyword=world%20cup%20final%201990%20referee PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409244/normal_600ff1928c1ab.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/Htibgj9/82246071968.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/O0Hjfia/sunshine_house_south_centennial_avenue_aiken_sc.pdfIn PDF document text
    • https://cdn.sqhk.co/bulunazi/iigcgiJ/bokogor.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/jhhf7cz/lucky_boy_song_mp3_download_songs._pk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452587/normal_5fcbae9a70f59.pdfIn PDF document text
    • http://duperalenow.22web.org/98265899973.pdfIn PDF document text
    • https://cdn.sqhk.co/runolisor/hjQpWhb/dujal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kutijizon.epizy.com/39046970637.pdfIn PDF document text
    • http://gozozofufeb.rf.gd/sikinabosamunojeboverav.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/bharathi_kannamma_songs_starmusiq.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/87465685775.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/cambridge_latin_book_2_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/histology_guide_digestive_system.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/52641560954.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/windows_10_display_driver_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/xinodazap.pdfIn PDF document text
    • http://rexawisoza.epizy.com/24363766250.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/jammu_university_bed_result_2016_marksheet.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_off0000d6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B3 5336 bytes
SHA-256: fe39cc21c9401902f98ed4a3b19149dfaad9038e8989116f9bc8e64420553c9b
font_01_sfnt_off0000e8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FC 10860 bytes
SHA-256: 98d66423b330289d2a0f7d85b715c64b36a696e3195ccd637f841c1e1b60b15d

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