Malicious PDF — malware analysis report

Static analysis result for SHA-256 cddc0d78e8f6cbc0…

MALICIOUS

PDF

46.5 KB Created: 2020-08-14 22:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 783e427ba8c4d2bbf3367c0b3ca2e599 SHA-1: 8936b6b493b73dd65b61a8a4869750f83c2df006 SHA-256: cddc0d78e8f6cbc0982bae63c925212ec1281bf73e84eb35f742369916431bdd
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=winter+radish+nutrition+information', which is likely intended to lead the user to malicious content. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links.

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=winter+radish+nutrition+information
    • http://dulatira.artfullivingmovement.com/uploads/1/3/1/3/131381679/371df86c4268.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/instagram_story_templates_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/98889083617.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/55316031998.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88020392138.pdf
    • https://cdn.shopify.com/s/files/1/0434/0196/9820/files/92871381344.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/40110590079.pdf
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/begripstoets_graad_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bumagigefabap.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/39900486912.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3315/files/biology_ebook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7642/7686/files/77685364011.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6720/files/xexexofikedimer.pdf
    • https://cdn.shopify.com/s/files/1/0438/2749/5072/files/nenowosozofo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8959/2473/files/ligue_total_midnight_cowboy.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_off000077e3.bin
72d78f856697498063c7e62018cc4845f07655132c0e4b5a200133592388c450		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E3 5128 bytes
font_01_sfnt_off00008935.bin
191b4b2b5ccd4ed08605700f844b2abf0f3883341aada40c369d885a3b917d94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8935 10412 bytes

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