Malicious PDF — malware analysis report

Static analysis result for SHA-256 49b8fc5a01432c97…

MALICIOUS

PDF

40.2 KB Created: 2020-08-13 09:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a5d92ab0270aff70146b0ae22a55c6a SHA-1: 05d0320c1d7e5720af6ee37d554107241ef2d34e SHA-256: 49b8fc5a01432c977a30684f3353d27bb3d553a42c78f1cb8dd843dd575112dc
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO poisoning and link farming. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/wb?keyword=industrial%20plant%20engineering%20pdf', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of many Shopify-hosted PDF links indicates a large-scale link farm operation.

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.com/wb?keyword=industrial%20plant%20engineering%20pdf
    • http://files.artofdesignonline.com/uploads/1/3/1/6/131637635/zaxaxebafuzo-bozibalup-kewutezolagam.pdf
    • http://files.babattingcages.com/uploads/1/3/2/6/132681985/fevebi.pdf
    • http://files.jsteinfoto.com/uploads/1/3/2/6/132696325/03fbde413453e.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/bepidiveko.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/72691866736.pdf
    • https://cdn.shopify.com/s/files/1/0436/9684/9051/files/35278573740.pdf
    • https://cdn.shopify.com/s/files/1/0432/0745/8975/files/7211545258.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/25796896229.pdf
    • https://cdn.shopify.com/s/files/1/0438/0862/0701/files/tebusekozukeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/1466323639.pdf
    • https://cdn.shopify.com/s/files/1/0438/9643/8936/files/sewalubu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/woocommerce_featured_products.pdf
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/30957886698.pdf
    • https://cdn.shopify.com/s/files/1/0439/3179/5624/files/53419524772.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/ragovulazetugasena.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/48386500584.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_off00005e71.bin
afbb28a34d21bc94e51e7d035f1d6d6df718dd6c57cfd9e4fa697bf6c8555162		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E71 5148 bytes
font_01_sfnt_off00006ffb.bin
8cabbbb3f22f7202c19fde936ea7245e8118f69b251c9d8cdd90fdd0ab865ebf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFB 10656 bytes

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