Malicious PDF — malware analysis report

Static analysis result for SHA-256 26eb1996fec6ae26…

MALICIOUS

PDF

44.3 KB Created: 2020-08-19 15:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66b9fdfaf8d1c78c8d6eee073694263d SHA-1: 6b128f60f68a776f51aa84e6ea6e5d1c7fb12708 SHA-256: 26eb1996fec6ae26a90a15589d73a3ada9bb33ddf5c230b9659df915abd68d93
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of specific execution chains.

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=beethoven+appassionata+sheet+music+pdf
    • http://mipezexi.mcgrathirishdancers.com/uploads/1/3/1/4/131408027/d80e7.pdf
    • http://files.educationfoundationoflm.org/uploads/1/3/1/8/131857419/kamolikex_fereniwalom.pdf
    • http://kurelebu.kavkid.com/uploads/1/3/0/8/130814238/9516280.pdf
    • http://files.orffnovascotia.com/uploads/1/3/0/7/130776517/1200303.pdf
    • https://cdn.shopify.com/s/files/1/0431/4621/5584/files/coordinating_and_subordinating_conjunctions_worksheet_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0432/3603/2680/files/51634248875.pdf
    • https://cdn.shopify.com/s/files/1/0438/2241/6029/files/bd_diesel_performance_products.pdf
    • https://cdn.shopify.com/s/files/1/0432/5464/4894/files/toziduwunikefatew.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/99014159600.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6505/files/zufowedodagafona.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdf
    • https://cdn.shopify.com/s/files/1/0448/5762/2689/files/asme_b16._5_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0453/9108/5736/files/fupotutaguxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7601/8585/files/dwg_to_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/5521/0905/files/lumotapase.pdf
    • https://cdn.shopify.com/s/files/1/0432/5975/6708/files/sitosijaxuwizimuna.pdf
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/rejoderetijitede.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_off00006602.bin
3d16825adcdc1f623ebaf7b636755e216107888e9ede7fdfe6e7b884598ef681		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6602 5376 bytes
font_01_sfnt_off0000782e.bin
1659282d008b2d4300b23c522708ea44339ba1edef20b9ef41784c2d1926ae0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x782E 14172 bytes

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