Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8fcbb882eebea3…

MALICIOUS

PDF

47.9 KB Created: 2020-08-19 04:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bce8f3610f2f52e8f28e0aff408f80f SHA-1: 3f5bc2b33dede718e20d37224de02d22f4c743ae SHA-256: 7f8fcbb882eebea35b781c933068ebe66c9f6b083bb344d66dff06ebc273ebff
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The presence of a 'download button' heuristic further supports the lure. The document body, though heavily obfuscated, contains the malicious URL, suggesting the intent is to redirect the user to a potentially harmful site for credential harvesting or malware delivery.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=acer+aspire+one+d255-+2dqkk+drivers
    • http://files.paulatipton-healy.com/uploads/1/3/2/6/132681826/f59558387.pdf
    • http://files.mariatzortziou.com/uploads/1/3/1/8/131871690/3503927.pdf
    • http://files.garycollinsphotography.com/uploads/1/3/2/6/132695306/xireki.pdf
    • http://munitox.mountolivetvets.com/uploads/1/3/0/9/130969489/4de2b.pdf
    • http://xukuxo.collura-art.com/uploads/1/3/0/8/130873947/wojatoxow_babelajibufifa_ravuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/2164/6498/files/pefeforarewodapa.pdf
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/34662266288.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/information_systems_for_business_an_experiential_approach_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/kifopojobewonuja.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53567737566.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/sijajug.pdf
    • https://cdn.shopify.com/s/files/1/0440/5788/6870/files/42946033015.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/
    • https://cdn.shopify.com/s/f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f87.bin
a4f6c022105336317abd394d26b1a0ccb9d44f347cde2473b61f16064980bba1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F87 5564 bytes
font_01_sfnt_off00008289.bin
fd526278331398e9f70d8eee1bf298c00234cc5a891a1b144384ad4427aa2f82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8289 14632 bytes

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