Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d3a8badc5e6916…

MALICIOUS

PDF

77.2 KB Created: 2021-03-15 15:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 2ba89711c3b9850f7aa60a0bef30d54a SHA-1: ce8d0f4dfd1ab9f003f16b11e2fc9a18144dcdbb SHA-256: d0d3a8badc5e69167c61507afd91af03d08b1e5efdfaf3294ceff75df623caf4
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for a phishing or malware distribution attempt. No scripts were extracted, but the presence of the external URI and the high confidence scores indicate a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/strik?utm_term=the+tenth+insight+book+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408323/normal_602b0d39b3521.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490949/normal_602e04bbc3c0d.pdfIn PDF document text
    • http://sesesuruko.mypressonline.com/siklus_hidup_cestoda.pdfIn PDF document text
    • http://xomofaki.getenjoyment.net/brownie_skillet_recipe_easy.pdfIn PDF document text
    • http://tofotibuwul.sportsontheweb.net/what_are_the_7_key_principles_of_the_constitution.pdfIn PDF document text
    • http://xivazokib.medianewsonline.com/power_pressure_cooker_xl_canning_instructions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483837/normal_604675430ca2e.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/tugumeb/uglies_by_scott_westerfeld_book.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/systems_analyst_interview_questions_and_answers_ebook.pdfIn PDF document text
    • http://kepewitibafef.myartsonline.com/kituzaxoz.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/blank_scrabble_board_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/52514512383.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/82017122329.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/audible_won_t_to_itunes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e29d9584-f139-4600-b0b1-2d279a6ee817/tolstoy_war_and_peace_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/formal_email_example_job_application.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/blood_money_all_song_mr_jatt.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/jasibobomizakenijemukod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad467a96-a225-4fec-ab46-afaab453008b/58133390800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e146c8f-e75b-475c-bffa-75410daf674e/90378656114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfabe535-8a9f-4b69-a9b4-5bf76fc102ed/how_to_crochet_easy_shell_blanket.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/kuwuvisepodasonud.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/89421133764.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_off0000f0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C7 5012 bytes
SHA-256: c8592a4315d6c6c7401714bc831b897908884abc7ffa2d25ceec32e266e83976
font_01_sfnt_off000101e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E7 10944 bytes
SHA-256: 6bba5071f1ce7fd3bb422d603c3346f6e846af98da25c353d8896958124c5682

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