Malicious PDF — malware analysis report

Static analysis result for SHA-256 68dd65e5661f1352…

MALICIOUS

PDF

137.4 KB Created: 2021-03-31 06:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 8cc20261c34e1c5ea053a9cf5e612d0c SHA-1: 900e92c67229b0e62b42dd7f03869fd73a0b8dfa SHA-256: 68dd65e5661f13520a32737ac7c99b619c1126549e9801159d97e427e3cc4571
94 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9321

Heuristics 3

  • 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
  • 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://vilenefex.ru/award?keyword=uses+of+a+liberal+education+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372682/normal_6056e0fd32268.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410988/normal_5febf15884f5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416791/normal_5ff65e4a82817.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454303/normal_5fdddf24b84cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470389/normal_60488aa5a5248.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451208/normal_5ffe1341ac2bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477373/normal_5ff55861a8067.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/c53c9611-1b38-43e8-a424-3cffcbf6d94a/stock_markets_crashing_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6913ea-3711-47b7-861c-5e59a63de581/dell_optiplex_960_diagnostic_lights_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f24f4388-318f-4d25-8a14-b01280acf2aa/lord_of_the_rings_beren_and_luthien_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/staples_carbonless_forms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bb3e62e-0bca-4798-afb0-ad19e864330f/the_confidence_code_book_depository.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/65498179028.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/rarujara.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/why_is_my_ue_boom_not_connecting_to_my_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/ayyappan_songs_video_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/elimination_method_for_solving_linear_equations_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b7f529-d77c-484e-a642-4fcb2b5e4dc8/jakanaviwekaxiv.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/92572052272.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/64897662306.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/tipinoxokexiketis.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/17815314172.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/cg_dj_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/how_to_adjust_schwinn_ic4.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/49581010234.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F875 5280 bytes
SHA-256: 895df0738671f9a5fdb20236a09d0bd80136913de73d20ea4cd71cf03607e3a2

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