Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c3f14509ac5f4e…

MALICIOUS

PDF

41.9 KB Created: 2020-11-01 19:21:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a434c2cd92945584975de9ae93c71c88 SHA-1: de75f24d9b0bf4d14752a14ce29f1eafbfb3fe15 SHA-256: 19c3f14509ac5f4eb92c7085674b62730a26180988c46c87fc54a6ca007e3c0a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.com/123?keyword=torrent+rosetta+stone+japanese In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421061/normal_5f9e256b58a0f.pdfIn PDF document text
    • https://wovuxekas.weebly.com/uploads/1/3/4/3/134379471/1564026.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/9243879.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/8460/8150/files/huntsville_al_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/social_media_marketing_contract_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/zimubenufijat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1026/9085/files/zamiziwojas.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/forge_of_empires_cheats_no_survey.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/sonekawarana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5122/8579/files/4960319272.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/games_workshop_stock_quote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8210/2984/files/dixosonadenisifizalu.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_off0000651d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651D 4804 bytes
SHA-256: 29c43a3bfbc04ad6812224dd04d423115ec38002fa924301f21da13638f37ba4
font_01_sfnt_off00007584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7584 11104 bytes
SHA-256: b242bccec2f3f80a0ed64c8803de9405ac6b4bedf934c7f56e1d23e37ff5288b