Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb68ac6346473e88…

MALICIOUS

PDF

87.0 KB Created: 2021-03-06 14:16:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4f86e304b782cca78e436b460bd84341 SHA-1: fcb26b71f4e768685cdf1d9fd82254e5310cd682 SHA-256: bb68ac6346473e88c2a0f4332283598c20e53c1667c4420bfbe26d6852e6c8e5
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, suggests a lure related to financial information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/wix?keyword=secrets+of+the+50+dollar+bill PDF link annotation
    • https://cdn.sqhk.co/zezinojox/ihhgGgh/types_of_police_sirens_sounds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423462/normal_5ffff5625c7ba.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/hiejf79/79899408738.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/zichjhx/maxi_craft_exploration_master.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471252/normal_5ff7e2f657afe.pdfIn PDF document text
    • http://fudoviwil.mywebcommunity.org/how_much_should_a_housewife_get_paid_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/uhjxjbm/league_of_war_mercenaries_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/bezakebijuk/jfAhcjb/tank._io_unblocked_games.pdfIn PDF document text
    • https://cdn.sqhk.co/batovafakupo/Hgd4hdG/9765454009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479462/normal_60403e9a162f2.pdfIn PDF document text
    • http://rawitotizoxuk.scienceontheweb.net/how_to_read_my_birth_chart.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/jjjijih/jogirivemavo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460975/normal_604032260e949.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450439/normal_603468f1d8d20.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/gipojit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416938/normal_603749b23f501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479460/normal_601b2920c0271.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/584c14f6-cc5d-4014-a1e7-094b870d9b03/birikavugevog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/838f9b92-6c86-4107-8589-2295fd5b1afb/the_south_and_west_transformed_test_a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cf0e626-58df-40a9-b8d0-e3d832d483bd/1468403808.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE39 5616 bytes
SHA-256: 25a8f607f27fb005917cb86162621bb7f121f843ac03bb3a8a143e9902c3397d
font_01_sfnt_off0001114b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1114B 12040 bytes
SHA-256: 04e924e282fcc681c810ca4766db493b6f9789128e90c6c6dbbd6e46e30f3f00
font_02_sfnt_off000138f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138F1 16168 bytes
SHA-256: 242633b00dc448d9f1a1c85ff42dca45651c506b10caaa74c4bbd73a060e7376

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