Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ea19c7ad830df1…

MALICIOUS

PDF

105.2 KB Created: 2020-08-20 11:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6185bb997388e3303d2fbcc79c17625 SHA-1: 01903294872efbb1cda42fc39e9a61ca58b2b7c9 SHA-256: 01ea19c7ad830df199121ed0245e2a05667aa7861c9ac6163a40779bafd97d27
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also hosts a large number of external links, many pointing to Shopify-hosted PDFs, indicating a link farm strategy. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=autocad+2007+full+crack+free
    • http://files.raphaelvillage.org/uploads/1/3/1/8/131858592/tologenixobifenifi.pdf
    • http://files.andyknappmusic.com/uploads/1/3/1/0/131070560/170547.pdf
    • http://xebadaga.dylanhurwitz.com/uploads/1/3/1/6/131636974/da3495.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/6822/6725/files/kununosunajevejenidop.pdf
    • https://cdn.shopify.com/s/files/1/0437/2951/8741/files/lozefodudebu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5446/5175/files/5645137956.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/imperativo_categorico.pdf
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/limenazamegoteki.pdf
    • https://cdn.shopify.com/s/files/1/0429/1044/9830/files/joyetech_evic_vtwo_mini_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/47964876868.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001396f.bin
d9c0a8ab968be60eeae79898da3d45d40692608b0848a70543de12d7c70dbe36
pdf-font-stream PDF embedded font (sfnt) at offset 0x1396F 3212 bytes
font_01_sfnt_off000144ed.bin
be6f9f77fd341f576fc10e6bc113b0ba8805459eecc7ce99c91ebff85ed3fcb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x144ED 4972 bytes
font_02_sfnt_off000155f3.bin
f8c1def7c06a0b588634c78c8062c39b9e0655794614487eb07419ffe9430b3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x155F3 16632 bytes
font_03_sfnt_off00018965.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x18965 4324 bytes