Malicious PDF — malware analysis report

Static analysis result for SHA-256 504d7b516c47950e…

MALICIOUS

PDF

37.7 KB Created: 2020-08-13 16:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69b2128abff2bd0c0bfdc5545527434a SHA-1: 3400fa60f7a971deea05f7e428c8bd498a82eadb SHA-256: 504d7b516c47950e1eeff561b635f33818304e368293b9d62341f38e22a1b2ac
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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.com/wb?keyword=hybrid%20framework%20in%20selenium%20webdriver%20pdf
    • http://files.slightlyaskewphotography.com/uploads/1/3/0/9/130969754/bedamuxisutakom.pdf
    • http://files.nugierfroom.com/uploads/1/3/0/9/130969433/ecca2c6eed.pdf
    • http://jixanawi.springwindlabradors.com/uploads/1/3/1/1/131164250/wurapu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2838/8772/files/ciara_and_i._mp3.pdf
    • https://cdn.shopify.com/s/files/1/0439/6072/9758/files/kenmore_freezer_model_253.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/95991290516.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/livefonositivaserus.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/6531613255.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/1126499386.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/tidivepubokikup.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/gelovex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/sierra_bullets_reloading_data.pdf
    • https://cdn.shopify.com/s/files/1/0435/6322/1155/files/generos_discursivos_tipos.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/kenokajijituxume.pdf
    • https://cdn.shopify.com/s/files/1/0431/3117/5063/files/61936638934.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/nobew.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_off00005174.bin
c62154e78b20fc628e68035bc94cd779f941db3d442e82caba31bf4f27c1b89e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5174 5604 bytes
font_01_sfnt_off00006489.bin
f7e6ff8029876f18355140bcc338fff7483e6bc07f07be10c275383b08ff1508		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6489 10872 bytes

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