Malicious PDF — malware analysis report

Static analysis result for SHA-256 b072d077b4062044…

MALICIOUS

PDF

41.7 KB Created: 2020-08-10 15:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2cc488c28b5d0b41c749905ec1add36 SHA-1: 495389b473f660683445e0a8f778c657e582629c SHA-256: b072d077b4062044276426b0777dcaf72d9fa73f6feeef3ab1d2c2923d62df0b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, disguised with a lure related to Harry Potter sheet music. This indicates a social engineering attempt to redirect the user to malicious content. The PDF also functions as a link farm, with numerous embedded links pointing to various PDF files, likely for SEO manipulation or to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=harry+potter+theme+song+easy+piano+sheet+music+pdf
    • http://files.treenailsoakproducts.com/uploads/1/3/0/7/130776276/3748083.pdf
    • http://files.lorin-wilson.com/uploads/1/3/0/7/130739664/pilorivuferifevirif.pdf
    • http://files.med2u.com/uploads/1/3/1/3/131398358/duwawukozamuxom.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/kuzukirizamizulajib.pdf
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/xomoviwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/6939/1527/files/causes_of_internet_addiction.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/xetozofapuxewefe.pdf
    • https://cdn.shopify.com/s/files/1/0448/0447/2992/files/equivalent_ratios_word_problems_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/xavozerego.pdf
    • https://cdn.shopify.com/s/files/1/0447/9143/1325/files/the_concise_dictionary_of_christian_theology.pdf
    • https://cdn.shopify.com/s/files/1/0435/5748/6753/files/orange_tesla_pill_report.pdf
    • https://cdn.shopify.com/s/files/1/0448/1361/5264/files/iron_on_patch_instructions.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000637c.bin
219ae15ffe7d9dd276cf15220209d21925cfa80451396ac1f998361b9ab8b86f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637C 5600 bytes
font_01_sfnt_off00007667.bin
51d521c8ab75444f9c117a83c78a2abddb71c3178cf5b0cc48c9700b9af6a763		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7667 10384 bytes

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