Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c54019cc3669c4…

MALICIOUS

PDF

47.2 KB Created: 2020-08-02 11:29:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03af7bcf8bf276548ba3e4b9c6e100a7 SHA-1: 4fec5ddac125275a02ad3b0e4ce6fd9622b90998 SHA-256: 41c54019cc3669c4b15d4387a2c692b56552b85bd28c3c49c34e54ebcdbaf888
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though partially garbled, contains text referencing 'how to make an ender portal' and a URL that redirects to malicious infrastructure. This suggests a social engineering lure to drive traffic to malicious sites.

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=how+do+you+make+a+ender+portal
    • http://files.plantiful-mama.com/uploads/1/3/1/3/131398430/aa269503d9.pdf
    • http://files.soundpost.us/uploads/1/3/2/7/132741385/794db153f63.pdf
    • http://files.jessicageoff.com/uploads/1/3/1/4/131438111/efb4375d.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/72490314248.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/31625424119.pdf
    • https://cdn.shopify.com/s/files/1/0430/6927/6313/files/35291693057.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/vezezodoxowo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0938/files/66136603148.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2975/files/20285561398.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/kenmore_dehumidifier_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/3460/5728/files/wumukakidomilema.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/5976866617.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/46417195592.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/50921429448.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/94008924206.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d10.bin
b1802de9a920fff81d3ab15cb59a105248658220facbc54818eb8b9eec6446b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D10 4980 bytes
font_01_sfnt_off00007df5.bin
2c0b34c02bf0370f35da853187463164f6322883439e7db02128a014244611ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF5 10428 bytes
font_02_sfnt_off0000a18c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA18C 4324 bytes

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