Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd58463951fd8e03…

MALICIOUS

PDF

40.9 KB Created: 2020-07-27 05:33:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8e6bb70ce3c801b958ef6bf626c17dc SHA-1: 7c1079471ca68e08856f48ad81939fd5434bdd92 SHA-256: fd58463951fd8e03c429cef0c2b33740bb45e5c21866911ee8c945a702c7692b
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=the+rock+song', is flagged as a malicious redirector. The document body is heavily obfuscated, but the presence of a link farm and a malicious redirector strongly suggests an attempt to direct users to harmful content, potentially for phishing or malware distribution.

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.com/pify?keyword=the+rock+song
    • http://files.homelesspetslifeline.com/uploads/1/3/1/0/131070009/7987057.pdf
    • http://files.yingjungchen.com/uploads/1/3/2/8/132814544/9892713.pdf
    • http://files.beyoungdesign.com/uploads/1/3/0/8/130814408/7214291.pdf
    • http://files.maidtoshineservices.net/uploads/1/3/1/4/131437268/29f33e.pdf
    • http://files.cakedupbycandice.com/uploads/1/3/0/9/130969893/vaxidoboluwo-foratorafat.pdf
    • http://files.cakedupbycandice.com/uploads/1/3/0/9/13096
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/tewak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26160609228.pdf
    • https://cdn.shopify.com/s/files/1/0429/2847/2220/files/36661968275.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pejuzesuloroxutebed.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/32090216956.pdf
    • https://cdn.shopify.com/s/files/1/0428/6450/9094/files/sirobomivif.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/13002760554.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/22177219645.pdf
    • https://cdn.shopify.com/s/files/1/0431/8566/8255/files/vazerafezopudajen.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/javewuvupowevivasogave.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/vasez.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_off00006685.bin
fa183e0087d49aa7854d0924f504221147806cc09676c80418ab1a3e1a28130b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 4492 bytes
font_01_sfnt_off000075ac.bin
9aa8d2f264b853d72a4ee1b4da8ce029ca02dbaff84664a9257a6957d91ec191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AC 9716 bytes

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