Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a1a696ea9ba5d12…

MALICIOUS

PDF

43.5 KB Created: 2020-08-15 02:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9243504fc594546b98a6ce34f2c65c91 SHA-1: 72d3d866ca57a410f7343e04cf87d1eac64b28ec SHA-256: 3a1a696ea9ba5d12263d1c2625434449cb13cd4ee6699d4972694a8996db774b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.com/wb?keyword=sigatoka%20leaf%20spot%20of%20banana%20pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution, under the guise of providing research material.

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=sigatoka%20leaf%20spot%20of%20banana%20pdf
    • http://files.steps-of-faith.com/uploads/1/3/1/4/131413678/c91818dc33719.pdf
    • http://files.tigerlilyyoga.com/uploads/1/3/0/8/130813860/pomipafalabur_tipemix_jovumutorab.pdf
    • http://files.impact2success.org/uploads/1/3/0/7/130775561/3709239.pdf
    • https://cdn.shopify.com/s/files/1/0429/0917/1871/files/60133294773.pdf
    • https://cdn.shopify.com/s/files/1/0439/3828/3678/files/maxotavoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/buxixofakowedobozuso.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/bikud.pdf
    • https://cdn.shopify.com/s/files/1/0438/9673/3864/files/28794968929.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4602/files/nokulane.pdf
    • https://cdn.shopify.com/s/files/1/0432/9229/5332/files/soroxisuwilado.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/56294331696.pdf
    • https://cdn.shopify.com/s/files/1/0434/6164/0358/files/metabolismo_de_aminoacidos_y_proteinas.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_off00006c07.bin
dcd3244bcf5c36825baae7119fbf176d96e47b79c5c34be926b00b5863ee76e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C07 5420 bytes
font_01_sfnt_off00007e85.bin
57e0b9d7d213e0ab38cb8404969866001ff2aea284e6d2c774e71530753e41cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E85 10188 bytes

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