Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb41fa3807d059f2…

MALICIOUS

PDF

48.8 KB Created: 2020-08-20 04:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6890e0fefc3c3edde4402e4d81e93393 SHA-1: df2e89c0d387cd966c7a220f906dc43da830ee6d SHA-256: cb41fa3807d059f215aff4822f67deeb2ff10eca8a408c193f975758138f260b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=keynote+timeline+template+free'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution. The presence of a PDF link farm further supports a malicious intent to distribute content via external links. No scripts were extracted from this sample.

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=keynote+timeline+template+free
    • http://files.cottontalesdesigns.com/uploads/1/3/0/7/130776120/bivevalisuri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31931154882.pdf
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/agenda_for_change_pay_scales_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0431/3281/3473/files/islamic_finance_and_banking_system.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/voxexesefulikurobodesa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/gizikijovi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5748/7778/files/81656228509.pdf
    • https://cdn.shopify.com/s/files/1/0428/5353/1807/files/36182747472.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/7335469759.pdf
    • https://cdn.shopify.com/s/files/1/0451/6528/1429/files/dual_energy_x_ray_absorptiometry.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/gagisubikefixafi.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_off00008321.bin
90caf80fa01374ce3607f83759554fd8b29e63714700e17383452f5965fc5f31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8321 4940 bytes
font_01_sfnt_off000093e4.bin
baa0adc3415faaf6dd04a407bd2971e6478198b91a55f75e11de0929130ee6f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93E4 10128 bytes

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