Malicious PDF — malware analysis report

Static analysis result for SHA-256 3796c89ebd6cced4…

MALICIOUS

PDF

37.6 KB Created: 2020-08-20 15:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 534582ff8f86035ae4d80c567d4a04a6 SHA-1: bf4ccd9852f568064bdebae9ddf6ade6f9b9e583 SHA-256: 3796c89ebd6cced4a54f6910139d5918857586b689c396e5be29a048ea93ea1d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a significant number of embedded links, identified as a PDF SEO link farm. One of these links, https://ttraff.com/pify?keyword=median+of+a+triangle+practice+problems+worksheet, is flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=median+of+a+triangle+practice+problems+worksheet
    • http://files.austintatiouseats.com/uploads/1/3/2/7/132712209/ninaku.pdf
    • http://files.pvzphoto.com/uploads/1/3/0/7/130776536/7044456.pdf
    • http://levegove.marfastudioarts.org/uploads/1/3/0/7/130775045/lazisox-kupizifivowa-bipewutet.pdf
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/30433274475.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/multiple_alleles_mcqs.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/38598599726.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/79647861121.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26225030347.pdf
    • https://cdn.shopify.com/s/files/1/0448/5106/9085/files/autocad_2020_tutorial_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/4999/2870/files/84795587596.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/67521277519.pdf
    • https://cdn.shopify.com/s/files/1/0435/3182/9412/files/minecraft_stone_button.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/47535534856.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_off00004e3e.bin
e0728383b59d864e0f19eefe515fffb52814ec7c2cf086123e6b69a1ac28757a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E3E 5872 bytes
font_01_sfnt_off00006221.bin
9174ac98d5f923d8fab2ee78c47c2117fae48b3184cd1209052ec30cce272880		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 12336 bytes

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