Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a89899fc3ef182f…

MALICIOUS

PDF

43.1 KB Created: 2020-08-19 17:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c1592228f05d2d2c1edd70d3880ede0 SHA-1: 99a5b3183b702537280d861e4aae7f16c69a2f4d SHA-256: 1a89899fc3ef182f97a3e5d5a7584b80e9d21108a9844790bd2c0ab6ba35dbbe
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=nuts+card+game+rules+pdf', is designed to lure users into clicking, likely leading to a phishing page or malware download. The document body, though heavily obfuscated, contains references to this URL and other benign-looking Shopify links, suggesting a link farm or redirection tactic.

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=nuts+card+game+rules+pdf
    • http://mekel.recycledreadspa.com/uploads/1/3/1/4/131453540/836492.pdf
    • http://files.smamusic.com/uploads/1/3/0/8/130873741/sowenu.pdf
    • http://tolomi.mackeiganmarketing.com/uploads/1/3/1/3/131398394/pevimageve.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/bvb_college_bidar_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/2296/5160/files/definition_of_augmented_reality.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/automation_tools_for_testing_android_applications.pdf
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/panikawizalefevevo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/12119507840.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36726725464.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/59233338533.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0899/files/holter_monitor_report_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/25729399106.pdf
    • https://cdn.shopify.com/s/files/1/0430/4030/9402/files/download_acrobat_reader_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4917/files/apprendre_le_francais_et_mp3_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/aminoglycosides_drugs.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/32753878249.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_off00006af3.bin
c7573d46fcc919f71a91d9ad4d27d1d44e65ecff9beca6d3a600aee6f4128563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF3 5444 bytes
font_01_sfnt_off00007d62.bin
1db0a993826c7ec8fd7a49e60689a13100ab3405587d287688231978d31cb908		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D62 10016 bytes

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