Malicious PDF — malware analysis report

Static analysis result for SHA-256 833bc0ccee57b81f…

MALICIOUS

PDF

55.0 KB Created: 2020-11-08 22:10:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c969ea728f5f2be58a4bdc51ba8e0c99 SHA-1: 12af6408172d671ed07fad8caa0b2a025be591b5 SHA-256: 833bc0ccee57b81f6907a73763d46958984ffe7fad0208a568ee07b9caac0c60
102 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://trafftec.ru/aws?keyword=hra+arch+street+new+britain+ct PDF link annotation
    • https://sifoginugiji.weebly.com/uploads/1/3/4/5/134588619/darorulajoxud_dedotewak.pdfIn PDF document text
    • https://ragidogatekanex.weebly.com/uploads/1/3/4/3/134388076/jorituvugofoxomonus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388619/normal_5f8e7870b609d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402533/normal_5fa256c481470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413016/normal_5fa1b59190506.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dixaleko/60790799270.pdfIn PDF document text
    • https://fujixowezizu.files.wordpress.com/2020/11/kufisejejabese.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/99980710751.pdfIn PDF document text
    • https://kigokivaj.files.wordpress.com/2020/11/41238771732.pdfIn PDF document text
    • https://pifakimep.files.wordpress.com/2020/11/fododuxuxinoni.pdfIn PDF document text
    • https://xisevijako.files.wordpress.com/2020/11/cuentos_para_representar_en_obras_de_teatro.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/beligip.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009a2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9A2D 22956 bytes
SHA-256: fac89b8eda03e2e6a23848be9753352167690dc21c9757bdaed8c18a7cd0957f
font_00_sfnt_off000065b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B4 4728 bytes
SHA-256: 5ee35e40ebf59a5633f549a509efe708195a9af6bef73e364b2f72de7158a958
font_01_sfnt_off000075b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B9 10568 bytes
SHA-256: 0e000259b301bddbce85d8875379c95ff7801db161868c9578c16af749ceab87
font_03_sfnt_off0000c0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0D7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2