Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0e9e9c95c3c421…

MALICIOUS

PDF

37.7 KB Created: 2020-08-01 05:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a705f4c1b36545c78997663c4313a349 SHA-1: 76f3648860202aca62051d064b397570674f729a SHA-256: 4a0e9e9c95c3c421d50191accc07f018db330663d898eb0fa577242d182e1f6f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and heuristics indicate it contains a mass of external links, including a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=skillet+comatose+songs'. This suggests the document's primary purpose is to lure users to malicious websites. No scripts were extracted from this sample.

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=skillet+comatose+songs
    • http://files.savwee.com/uploads/1/3/1/3/131380175/f693eea.pdf
    • http://files.arthousestudios.com.au/uploads/1/3/0/8/130813546/lonegovuzakug.pdf
    • http://files.billiardsaustralia.com/uploads/1/3/0/9/130969048/difapitiz_medeliwoj_xafuretololeti_naguf.pdf
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/pexajositamobit.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/zikifunopazupid.pdf
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/9770951858.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/jitasitepakegakomusaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/90131014676.pdf
    • https://cdn.shopify.com/s/files/1/0433/4390/4927/files/wajaxividapot.pdf
    • https://cdn.shopify.com/s/files/1/0429/6671/2479/files/72337691937.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/96797260799.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/vozivabo.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_off00005653.bin
e66227636fd4a926298c5473babeaa068687b1d521d6f7cf9f1cc71f42dccff7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5653 5188 bytes
font_01_sfnt_off000067ee.bin
7621da4fdc650c11d3b115302e6e0fb0dffd7f5cea1920b5588ed371f7c8307f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EE 10040 bytes

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