Malicious PDF — malware analysis report

Static analysis result for SHA-256 c624f3fbc1dd27d4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-15 07:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14e4e7f12b973808d7cf9fac8ec0e60a SHA-1: e05a85e6b227e3d15b0c1b5f8a6b6f9f8029e02a SHA-256: c624f3fbc1dd27d4ffbca5f3d77fecbf413c1de8b3eeeec31662f96076d792f8
128 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for an 'Animation throwdown beginners guide'. This link redirects to `https://ttraff.com/pify?keyword=animation+throwdown+beginners+guide`, which is flagged as a malicious redirector. The document also features a large number of embedded links, many pointing to Shopify domains, likely as part of an SEO link farm to obscure the malicious redirector. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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.
  • 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
  • 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=animation+throwdown+beginners+guide
    • http://files.kcbeckerphotography.com/uploads/1/3/1/4/131437599/36fab69afd8.pdf
    • https://cdn.shopify.com/s/files/1/0432/7312/6052/files/sulevodepufazezowux.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/morupugakokilewuwizele.pdf
    • https://cdn.shopify.com/s/files/1/0437/5147/3313/files/occupational_english_test_for_doctors.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4220/files/the_cost_of_discipleship_by_dietrich_bonhoeffer.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4340/files/coordinate_geometry_class_9.pdf
    • https://cdn.shopify.com/s/files/1/0434/4043/9446/files/baby_shark_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0439/2691/3179/files/beginners_python_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/topographic_map_reading.pdf
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/bewidivije.pdf
    • https://cdn.shopify.com/s/files/1/0431/2095/1450/files/xebinezatavewig.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4477/files/20743253489.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_off0000647a.bin
a51367e81ae25d923f1ec27fb2a4243998b8683fd2c27d43b1ffb4e6d51e5a84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x647A 5428 bytes
font_01_sfnt_off000076c8.bin
a2332729d2b1e198396bbca37489460592c390313f2d9834202da90724ab4506		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 10000 bytes

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