Malicious PDF — malware analysis report

Static analysis result for SHA-256 9adda197b840973b…

MALICIOUS

PDF

72.1 KB Created: 2020-12-11 21:40:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fde474c42dcb87322efd45f06522fa69 SHA-1: bae69f6cd82f108f9a665a55635b49aafac717ab SHA-256: 9adda197b840973be2e7f7c898debe2f9248a5321f12c9c4a5b8f4e8cf5d4571
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains text related to 'social security office new orleans westbank', suggesting a phishing lure. The ML classifier also flagged this PDF with high confidence.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=social+security+office+new+orleans+westbank In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393019/normal_5fa384e07b4bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456399/normal_5faa78b6b0aa7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd00369d104e5f152e5343/1606221883536/lampadati_felon_gta_5_spawn.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2b72bbd740658066ec4/t/5fc0f248eaf37e3b64be0d91/1606480457360/how_english_works_a_linguistic_introduction_3rd_edition_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce04f10356d927d7eb6228/t/5fd0c62c5efba8153b2bd05b/1607517742579/20231169982.pdfIn PDF document text
    • https://s3.amazonaws.com/taruzudov/wynk_music_app_download_for_pc_windows_8.1.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/free_ordinal_numbers_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/baixar_impressora_creator_gratis_em_portugues.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcec23c5ecf630459445b0a/t/5fd20152871f8c6e59615313/1607598418848/dadolopugibeduvinuperano.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5904aff13940aa25f39a7/t/5fd128db30e9c03d9826957a/1607543005803/at_t_prepaid_customer_service_contact_number.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/arduino_uno_library_for_proteus_8.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcffbcedabee7b4407c749/1606221756118/vanuvufolewaxo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3069e0a2757459bf0d6c4/t/5fcb572a1880ce05e84924c9/1607161643636/oxygen_concentrator_price.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bcfb2e537a05ef083615/t/5fc139c2a97599144e24103b/1606498754911/good_morning_pictures_for_facebook.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_off0000dc6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6F 5376 bytes
SHA-256: 77f287319e5411cbff63ff93ca6c89e799c5ff14ac77522ac9c3ebca7e98e06e
font_01_sfnt_off0000eee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE4 10580 bytes
SHA-256: faf216fe2dc06fa65d24dd6d77383535dd5516d99c5da1a73528034d3942ad1c

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