Malicious PDF — malware analysis report

Static analysis result for SHA-256 8197879141c5d720…

MALICIOUS

PDF

94.9 KB Created: 2021-02-16 06:54:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 068e406ce42d03721cbf082d266823f2 SHA-1: 361784256ed4c3fd0c76e21cd27d895ee472859a SHA-256: 8197879141c5d7201a155e357e77c23ed7878a8822887952c833f9994e96e79b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?utm_term=merchant+of+venice+workbook+answers+act+2+scene+7 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494889/normal_6004b4f3bc7b0.pdfIn PDF document text
    • https://cdn.sqhk.co/lagolipumepi/qhfha7l/zodijeritilijonidem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413566/normal_5ff4ab1cc6e5e.pdfIn PDF document text
    • http://card2card.live/sopajavedomisasavewowndz5t.pdfIn PDF document text
    • http://trokot-online.xyz/583861686544av3c.pdfIn PDF document text
    • http://trikotoria.ru/how_to_play_all_trumpet_notescrr7k.pdfIn PDF document text
    • http://bebodepana.22web.org/modern_world_history_textbook_question_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/subilikiwi/jcjjmh1/-_34-_85.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/mejifavo/selected_information_substantially_all_disclosures_omitted.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/printable_probability_worksheets_for_7th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/chemistry_laboratory_safety_crossword_puzzle_answer_key.pdfIn PDF document text
    • http://nivodonugito.rf.gd/sikh_ardas_in_punjabi.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/anticoagulants_drugs.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/whatsapp_messenger_app_for_android.pdfIn PDF document text
    • http://desibevazivoxan.rf.gd/arduino_basic_programming_guide.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_off00013444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13444 5512 bytes
SHA-256: dc81d0b6d988b7455036dea8b27adc1e8011f20fcc5fca0c0ece13c4986073c5
font_01_sfnt_off0001472f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1472F 12096 bytes
SHA-256: 4b0efe727c4d6135ddfe7fc7090989a87a5eeddee0616e332993f2a3de6e08c5