Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6e7bbf72f6d39b…

MALICIOUS

PDF

44.4 KB Created: 2020-08-25 00:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad4fd3cc17313f68fcaeaaee9043dc91 SHA-1: 47ee82b04680d2c1b15c562c0cec7b29e8d0b3f7 SHA-256: 0a6e7bbf72f6d39b458c8bbeda75c066299bef6fe56c3b824a9f762e5756f329
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious redirectors or benign content farms, suggesting a link-farming or phishing attempt. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content is designed to trick users into installing software or extensions. The embedded URL 'https://ttraff.com/pify?keyword=brackets+code+editor+latest+version' is flagged as malicious, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=brackets+code+editor+latest+version
    • http://files.magnificent-earth.com/uploads/1/3/1/0/131069766/ae9355476.pdf
    • http://files.barryboycephotos.com/uploads/1/3/2/6/132696598/fekofo.pdf
    • http://files.tmpmentoring.com/uploads/1/3/1/3/131398406/6572457.pdf
    • http://tonepa.manilaaudioclub.com/uploads/1/3/1/4/131438539/dedotegivix-raluk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/2321/8341/files/applebee_s_menu_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0989/1742/files/34284348602.pdf
    • https://cdn.shopify.com/s/files/1/0431/6046/9660/files/car_parking_design_standards.pdf
    • https://cdn.shopify.com/s/files/1/0432/1820/6888/files/nazuzinojowikuletenudo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3279/files/25036500119.pdf
    • https://cdn.shopify.com/s/files/1/0437/9285/9293/files/72456525032.pdf
    • https://cdn.shopify.com/s/files/1/0431/1747/8039/files/employee_evaluation_templates.pdf
    • https://cdn.shopify.com/s/files/1/0428/5464/5916/files/the_silmarillion_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/vudonujiferelu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/abandoned_farmhouse_poem.pdf
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/bangladeshi_funny_picture_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/7434/5365/files/93452694501.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fef.bin
4810e91079f37f6a20e441417c2094706238bf6d5954cace67aa9dd86445256d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEF 5108 bytes
font_01_sfnt_off0000815d.bin
6900871a453f2f81555272e281f7a11daf6c8ae762c7aea2639e7643a4b0b8b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x815D 10100 bytes

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