Malicious PDF — malware analysis report

Static analysis result for SHA-256 8001f7cf6a826213…

MALICIOUS

PDF

30.9 KB Created: 2020-08-19 02:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0fdf018bf690eb916b0b36939f6f607 SHA-1: 5963f4f866a5088dea9432d17842364484e79dee SHA-256: 8001f7cf6a82621312fe06bc096fec03c7712f50e019174a140bf0ef6bc96ff9
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a 'Bhushan power and steel annual report 2018' and the malicious URL. The PDF_SEO_LINK_FARM heuristic suggests this is part of a larger link farm operation. The primary malicious IOC is the redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=bhushan+power+and+steel+annual+report+2018
    • http://files.ourhuskyhome.com/uploads/1/3/1/3/131379732/9877855.pdf
    • https://cdn.shopify.com/s/files/1/0429/4744/4903/files/polokevo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5193/3078/files/27980661317.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/98826474730.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/28870074024.pdf
    • https://cdn.shopify.com/s/files/1/0447/8137/1543/files/lista_de_aceites_esenciales_y_sus_propiedades.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/puwekasuzifo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/pm_list_packages.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6502/files/tefefelili.pdf
    • https://cdn.shopify.com/s/files/1/0437/9249/8850/files/7562232411.pdf
    • https://cdn.shopify.com/s/files/1/0439/9346/4990/files/aeroplane_gif_images_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0209/files/alphonse_daudet_les_lettres_de_mon_moulin.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_off00003eb2.bin
331c899c2216d1cce792e37cb7b0fa7f7908c13f524920e21d25205cead91eb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3EB2 5708 bytes
font_01_sfnt_off00005229.bin
44577e28e06d8852fb7c18c5054c4a7f2cea1383ca0f8554cc349868a7c0a75d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5229 8508 bytes

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