Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f63fec450fb8c3f…

MALICIOUS

PDF

70.9 KB Created: 2021-01-15 04:44:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cf6ca4327c4f80870f33f0eca3ac79a3 SHA-1: 1f1310aff78447999333b388bfe140cd2c030152 SHA-256: 7f63fec450fb8c3f873e0333c44e9f1785c5df0cea6d8b9114fdc11c3c3861e6
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafffe.ru/wb?keyword=equalizer%20for%20bluetooth%20headset%20pro%20apk PDF link annotation
    • https://site-1186874.mozfiles.com/files/1186874/jupopafewip.pdfIn PDF document text
    • https://site-1181732.mozfiles.com/files/1181732/fitness_horizon_smartwatch.pdfIn PDF document text
    • https://site-1178057.mozfiles.com/files/1178057/change_picture_lock_screen_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/Bzic25l/free_code_editor_for_python.pdfIn PDF document text
    • https://cdn.sqhk.co/wunokebewoz/ulijUak/juvubetezotijovof.pdfIn PDF document text
    • https://site-1083772.mozfiles.com/files/1083772/83599663478.pdfIn PDF document text
    • https://site-1189081.mozfiles.com/files/1189081/logical_puzzles_questions_and_answers_in_telugu.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/1D7SRhh/asteroid_hitting_earth_2020_nasa.pdfIn PDF document text
    • https://bulejoge.weebly.com/uploads/1/3/0/7/130775594/tularonasonexo-zedora-miloberiposow.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/ijeXjsy/vugom.pdfIn PDF document text
    • https://junafoxotoroj.weebly.com/uploads/1/3/0/7/130738975/9429815.pdfIn PDF document text
    • https://lomojibopizan.weebly.com/uploads/1/3/4/8/134886372/noparufe.pdfIn PDF document text
    • https://fimupekegu.weebly.com/uploads/1/3/4/5/134502303/1208414.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/xezonijida/free_ebook_template_for_openoffice.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/471106757.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_off0000d94f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94F 5468 bytes
SHA-256: cc33f0f8f502e3912dd5fde49eb5b225d2fdbd0aee957cb9475c9d6fa56183c0
font_01_sfnt_off0000ebe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE3 10268 bytes
SHA-256: 96f136e3f08fa4cc735c797db39ac4bb3c61da8333047f9ef1d871ea0726ea16