Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd2b7b23f5a6bc3…

MALICIOUS

PDF

47.9 KB Created: 2020-08-02 22:28:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d8447137eae7572f981e6b4437fc78d SHA-1: b1b3347be955fc6996bdcbfad4a7d8c5f7b70c72 SHA-256: 2dd2b7b23f5a6bc3ebdc655cf5d619fb6ad2e55a8fdfec50803e1a5e15726ce6
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to a game race, and the primary malicious URL is embedded within it. The PDF structure and link farm suggest a phishing or redirection attempt to a malicious site.

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/pify?keyword=hobgoblin+5e+race+volo
    • http://files.vandegriftgolf.com/uploads/1/3/0/7/130775518/6186430.pdf
    • http://files.garrisonvalleyfarms.com/uploads/1/3/1/8/131871701/danezorevumixesubun.pdf
    • http://files.kitchengallerydesign.com/uploads/1/3/2/6/132680808/4026470.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/32429491577.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/47947622090.pdf
    • https://cdn.shopify.com/s/files/1/0429/6025/7177/files/3750686780.pdf
    • https://cdn.shopify.com/s/files/1/0436/0231/3373/files/vubofijobavivabokafumu.pdf
    • https://cdn.shopify.com/s/files/1/0440/4543/5030/files/e2_80_9cnoble_savage_e2_80_9d.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/libeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/70819626116.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/tubebe.pdf
    • https://cdn.shopify.com/s/files/1/0435/0358/3384/files/toxudumegozuzevaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/lazefevoxomuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/xiwelisijaradukaji.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_off00007d01.bin
39cf98e981261b2b7377608fcebb3047e6dd35ed6d8e9a8b6f28c7740d22ed8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D01 5076 bytes
font_01_sfnt_off00008e62.bin
f0205613d7c62660ed0fedeb81daa775301338570fd47a71f2bd150883d4fe51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E62 10736 bytes

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