Malicious PDF — malware analysis report

Static analysis result for SHA-256 12263fabaed885d0…

MALICIOUS

PDF

70.8 KB Created: 2021-02-15 15:03:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8104d5cd651dffedf75833e62ae7db81 SHA-1: 64f953b3a92936fa3e126f0c69e4b448b9e23d75 SHA-256: 12263fabaed885d00de1be44e5cbf67280d30eaf5c8bb3bc5af53047736d2ed2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'https://jottigo.ru/123?utm_term=samsung+nu7100+65+inch+dimensions', which is likely a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, consistent with phishing or credential harvesting.

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://jottigo.ru/123?utm_term=samsung+nu7100+65+inch+dimensions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465397/normal_5fefc16d003a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474997/normal_5fe0da10c84f7.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/ijjaiid/58613930549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501509/normal_5fdb58820f0b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386852/normal_5ff5006d46147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413000/normal_60225daaa3f80.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/gcghgdp/ea_sports_ufc_1_brock_lesnar.pdfIn PDF document text
    • http://pabubojuboju.iblogger.org/43998392369.pdfIn PDF document text
    • https://cdn.sqhk.co/vafegijateno/c9ggcnH/53301041089.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403118/normal_5fe48ca76c3b9.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/SiiZgeu/baseball_9_game_tips.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/imperial_beach_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/algebra_2_apexvs_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/ubuntu_32_bit_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/e_commerce_android_app_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/nokelolexo.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/nulibemiguwibu.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/farojerug.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_off0000d453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD453 5880 bytes
SHA-256: a4dc3aab767900196e1f01fd62d6ed6d175d91c28f7aec4eedc02f5bbab23409
font_01_sfnt_off0000e842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE842 11148 bytes
SHA-256: 60fa761d11a3be926eafe4ba87cc3f6c5f9c914f1e7a2a8264d8717448f3cbfb

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