Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c63b06a559e785…

MALICIOUS

PDF

44.9 KB Created: 2020-08-01 05:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adfbb28f4f2222bb6633b9838c8b74f9 SHA-1: 2d4da5cb4fa939e0d71b27b129fb0ed068de725b SHA-256: c9c63b06a559e78583423f5e243f4b1ce9148c05cbbfe0815ecef8f7393cf956
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, likely as part of a phishing or scam campaign. The document body and embedded links suggest a lure related to '99 cent movies'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the malicious nature of the redirector. The ML classifier also strongly indicated maliciousness.

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=itunes+99+cent+movies
    • http://files.babygeelong.com.au/uploads/1/3/0/7/130776088/0335e64.pdf
    • http://files.model3dbiology.com/uploads/1/3/1/4/131437149/3d7e976.pdf
    • http://files.daisydogfood.com/uploads/1/3/2/7/132740413/fc06573258d6173.pdf
    • http://files.cgexitmaterials.com/uploads/1/3/2/6/132681611/4553499.pdf
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/nojifibaliji.pdf
    • https://cdn.shopify.com/s/files/1/0433/9643/2021/files/xavogameruxulezexew.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/59064849529.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/42773515732.pdf
    • https://cdn.shopify.com/s/files/1/0440/2960/8101/files/tuzedufitop.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/90603820161.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/96387436226.pdf
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/pesimij.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7407/files/42579571915.pdf
    • https://cdn.shopify.com/s/files/1/0436/2783/9641/files/lulerazegokozopofifi.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_off00007291.bin
46ac4f35625fb4402e81a511a32e5109a8cc27d1e65e5679d9d0406e258da3e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7291 4760 bytes
font_01_sfnt_off000082b8.bin
7f9c1bd36fcc337a1bf601fb098520434574140ee803e7d70970a4c05e7ae95a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82B8 10684 bytes

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