Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4882323b05644d4…

MALICIOUS

PDF

40.4 KB Created: 2020-08-05 06:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47f6e8854d540336f3eaf1a9e0b5aa6d SHA-1: 8c21b7a188178197e707e012a3405a154c86487b SHA-256: d4882323b05644d42ed61663c24e184360c786fc4d8a6a3699dbd2cdcd50800a
120 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, pointing to 'https://ttraff.ru/pify?keyword=alprazolam+bula+anvisa+pdf'. The document body, though heavily obfuscated, contains this URL and other embedded URLs, suggesting a lure to external content. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=alprazolam+bula+anvisa+pdf
    • http://files.hredeemer.org/uploads/1/3/1/4/131452842/31ee4.pdf
    • http://files.restorativeintegration.com/uploads/1/3/1/4/131453399/e4490.pdf
    • http://files.isabelladavid.com/uploads/1/3/0/8/130815115/fc2fe843603e.pdf
    • https://cdn.shopify.com/s/files/1/0440/6371/9574/files/leauge_of_graphs.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/vapomofazibipefisupuge.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5292/files/peroxidasa_y_catalasa.pdf
    • https://cdn.shopify.com/s/files/1/0438/0416/4257/files/zegusuvuwexabirimig.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0534/files/19228598461.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5025/files/47019474255.pdf
    • https://cdn.shopify.com/s/files/1/0440/1538/6789/files/xolixaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/83976029723.pdf
    • https://cdn.shopify.com/s/files/1/0434/8218/5893/files/old_ncert_ancient_history_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/98690017592.pdf
    • https://cdn.shopify.com/s/files/1/0433/4934/4421/files/tifofodojiduv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5466/9729/files/bitidepile.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_off000060d4.bin
b500e88fb148a68cfd275892f5df0919bec6cd07dbcc47f1a806f4a94d9ea77e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D4 5424 bytes
font_01_sfnt_off00007338.bin
5ba2582f84acff433eb0caf8f5eb8d75ee646e8bd6b0bee655af8f63a0da25c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 9824 bytes

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