Malicious PDF — malware analysis report

Static analysis result for SHA-256 d80981ecaa40045a…

MALICIOUS

PDF

49.9 KB Created: 2020-08-27 18:18:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aac911f771f451cad9503758171170c0 SHA-1: 473674fb4f16a168d21a54ec0e6867729dff07a2 SHA-256: d80981ecaa40045a26d6b5afc0c27bc9b54d2e50b3003450cb3caf55e11a2cec
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify URLs, but one critical link redirects to known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a lure for users seeking 'analytical skills books pdf'. The presence of numerous links and the redirection to a malicious domain strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=analytical+skills+books+pdf
    • http://koriwudi.abellcable.com/uploads/1/3/2/8/132815806/4180883.pdf
    • http://poletuz.alexandradeglise.com/uploads/1/3/1/1/131164456/681490.pdf
    • http://files.churchofthelukumi.com/uploads/1/3/2/7/132741397/760033d.pdf
    • http://fubivare.skateteamindy.com/uploads/1/3/2/3/132303093/f6d1d9cb9afd4be.pdf
    • http://wiwuto.feedingfamiliesministry.org/uploads/1/3/0/9/130969742/2253451.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/yamaha_moto_4_200_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/41852342689.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/zajugivuseruwedorurileve.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/velekuraj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/sovofukulew.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/automobile_parts_description.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/5419118732.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/65441067371.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/32966000450.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_off00008618.bin
cac71495c9ed82a491edf8c525ed0d363f2493df1f19336e7545e20b63728dfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8618 5348 bytes
font_01_sfnt_off00009859.bin
628f82384b441986029e6b66064c41b754b3819268ee3dbdb1432049b11c4326		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9859 10020 bytes

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