Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1afcf71568a44e7…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 10:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a6f8d3276864062ce4615e71cb51aeb SHA-1: 1988f002f441e59c9defe37e1ef671dd4f2b5fce SHA-256: f1afcf71568a44e742da31ee92c6e76fd06e4f7e5c60d96ea52de697f8baaf24
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure related to 'Jasmine flower song violin sheet music' and embeds numerous external links, many of which point to Shopify domains hosting other PDFs. One critical heuristic indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=jasmine+flower+song+violin+sheet+music', which is the primary indicator of malicious intent. The document body, though heavily obfuscated, also contains this redirector URL and several other PDF links, suggesting a link farm or redirection strategy to distribute further malicious content.

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.
  • 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
  • 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.cc/pify?keyword=jasmine+flower+song+violin+sheet+music
    • http://files.melissamullercounseling.com/uploads/1/3/0/9/130969305/kafafin_luwudoxoz_tisomuwutosojem.pdf
    • http://files.liviajatoba.com/uploads/1/3/1/6/131636914/470140.pdf
    • https://cdn.shopify.com/s/files/1/0440/7210/8197/files/nuwesofurijiwoloza.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9493/files/ginavalobuni.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/lugene.pdf
    • https://cdn.shopify.com/s/files/1/0430/3264/1689/files/41128393266.pdf
    • https://cdn.shopify.com/s/files/1/0439/5555/2414/files/ripurigawinesawiruwokin.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/futon.pdf
    • https://cdn.shopify.com/s/files/1/0454/6186/4606/files/bath_uk_map.pdf
    • https://cdn.shopify.com/s/files/1/0459/9899/7663/files/muzufugesanalewotol.pdf
    • https://cdn.shopify.com/s/files/1/0428/4419/2935/files/garotanitadep.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/cask_of_amontillado_analysis.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_off00005da1.bin
a7825c163caa73fee5ea39b683efa37baed8f9e3a218f61eb0a2d92de758f267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA1 5436 bytes
font_01_sfnt_off00007005.bin
91781095a5f97113e5678c22bd545890ed08b2c61b4023eca2cf7aee19d3710b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7005 9992 bytes

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