Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c25d723a19fcdfd…

MALICIOUS

PDF

43.0 KB Created: 2020-08-08 09:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1b86a99ef0496307d317e5cba5c3186 SHA-1: a70c8fca47a5ea2996470197705663ddb8260ba2 SHA-256: 1c25d723a19fcdfd1d4573d29c7ced04340f8b4185a7c9d1614d7b971647537b
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.ru'. Additionally, it exhibits a PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure malicious intent. The 'SE_INVOICE_LURE' heuristic indicates the document's content is designed to trick the user into clicking the malicious link, likely for phishing or malware delivery.

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.ru/pify?keyword=coliformes+totales+en+agua+potable+pdf
    • http://files.mrmcfadyen.com/uploads/1/3/0/7/130776406/8912594.pdf
    • http://files.lakeelmojaycees.org/uploads/1/3/1/4/131409508/vetefogafaxexonaperu.pdf
    • http://files.tomspod.com/uploads/1/3/1/4/131483053/3c87eece8f12.pdf
    • http://files.transformationscenter.org/uploads/1/3/1/3/131380480/xunigut_kipufi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/mofajasepo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/50128401872.pdf
    • https://cdn.shopify.com/s/files/1/0430/1229/2767/files/benjamin_button_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/39239865049.pdf
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/eat_pray_love_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/the_art_of_war_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0434/1868/1496/files/56456226032.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/gadokoxubomen.pdf
    • https://cdn.shopify.com/s/files/1/0434/5203/9328/files/watuwotinizusawipo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/17383916423.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/63383988364.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/salivobu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5392/4004/files/quantitative_aptitude_examples_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/analog_and_digital_data_transmission.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_off00006576.bin
2a9701a3c0c8571935dfd4d41f9579bcfdf76eb49d864d928bfbc4b11ed890c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 5404 bytes
font_01_sfnt_off000077b5.bin
d2224890f32ee069a3070b1f1fde2f6f15e64ff58c40e7f06902e298be37b516
pdf-font-stream PDF embedded font (sfnt) at offset 0x77B5 12084 bytes