Malicious PDF — malware analysis report

Static analysis result for SHA-256 c589182c93d6cc39…

MALICIOUS

PDF

40.9 KB Created: 2020-08-15 05:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8310be5c598444d7ab4100f8cb724c2d SHA-1: 1175fa1e5076613f1978d35ee4384f8971b7ed25 SHA-256: c589182c93d6cc39b318e401d3057dbee61c04c1d36b28e525cf7341bb4f579f
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the redirection. This suggests a phishing or scam attempt where the user is lured into clicking a link that leads to malicious infrastructure. No scripts were extracted, limiting the analysis of further stages.

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=reasons+for+becoming+an+entrepreneur+pdf
    • http://files.saginawago.com/uploads/1/3/0/7/130740297/8658761.pdf
    • http://files.clubhouseent.com/uploads/1/3/0/8/130815311/fenojatajatujawob.pdf
    • http://nerazuked.taylorreportingsolutions.com/uploads/1/3/0/8/130874493/1636652.pdf
    • http://files.aaadentalbahamas.com/uploads/1/3/1/8/131856333/tofazov.pdf
    • http://files.nourishyourpurposenow.com/uploads/1/3/2/6/132695829/motogazu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/learning_spanish_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/zovojewido.pdf
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/60414460070.pdf
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/tujibakajagupitiwemegojof.pdf
    • https://cdn.shopify.com/s/files/1/0434/4676/3677/files/65988676639.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7248/files/rabebefe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/80698206247.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/windows_7_activation_hack.pdf
    • https://cdn.shopify.com/s/files/1/0435/0646/6982/files/25850944765.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_off000061cf.bin
36f8953a70c180a61bec532e329baa9ea3e13dcea5c4d2a200038e3b2639aa3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CF 5592 bytes
font_01_sfnt_off000074ba.bin
690b89345093f4ca04cb68eb0dcf27c4a64d12960bc410349e43e75e715e7eb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74BA 9996 bytes

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