Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0036a91cd09464…

MALICIOUS

PDF

41.1 KB Created: 2020-08-05 00:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c956f5eb3175b2d676eb19f1e5ed2c6 SHA-1: 0f9203373ccbccb5789b038729f8002234493966 SHA-256: 9f0036a91cd09464d253061dc946170973a5f2d09706686e3fc380c7a0261c9f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains a link farm, with one primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same lure text and URLs as the heuristic findings. The primary malicious URL is https://ttraff.com/pify?keyword=hiv+aids+signs+and+symptoms+pdf, which redirects to benign Shopify-hosted PDFs, indicating a redirection chain designed to obscure the final malicious destination.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=hiv+aids+signs+and+symptoms+pdf
    • http://files.northwindcrossings.com/uploads/1/3/2/6/132682441/jidepixudan.pdf
    • http://files.essence-into-form.com/uploads/1/3/0/7/130776393/7198556.pdf
    • http://files.rejuvenatemedical.co.uk/uploads/1/3/1/3/131379496/1130245.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/1853504228.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/bubilojup.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/28342071698.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/2901562547.pdf
    • https://cdn.shopify.com/s/files/1/0435/8488/0798/files/76855145307.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/bevun.pdf
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/73522354780.pdf
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/sinkmaster_bonecrusher_750_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/munamemufepomurovag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofusibosaduxigagixuvoma.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_off00006287.bin
dc7c3e3f835d66559cb2a980e0af2b27b3bae74e43eb4d9f3f03681a0f91137b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6287 5356 bytes
font_01_sfnt_off000074c0.bin
15aa0d30e378c5bccc294a5bb2a28f5ff0dc4f6a0effdcde08185d86d3f200be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C0 10120 bytes

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