Malicious PDF — malware analysis report

Static analysis result for SHA-256 205b0f0ba2151597…

MALICIOUS

PDF

42.5 KB Created: 2020-08-19 16:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab21139748d2111be7e84195daeda0a3 SHA-1: 82da6757795065173bc2e41d849e75bd127b49f5 SHA-256: 205b0f0ba2151597c553e858818907a2714c6bed123d4cc1d64b7d3860c8079c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One of these links, https://ttraff.com/pify?keyword=ancient+egypt+civilization+pdf, points to a known malicious redirector. The document body, though heavily corrupted, appears to contain references to this URL and other Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to lure victims.

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=ancient+egypt+civilization+pdf
    • http://files.cowen.rocks/uploads/1/3/2/6/132695862/bca83e8d0.pdf
    • https://cdn.shopify.com/s/files/1/0446/0979/8307/files/vipezenovotu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/63822565002.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/13009020653.pdf
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/69589926007.pdf
    • https://cdn.shopify.com/s/files/1/0434/8700/2790/files/86919286162.pdf
    • https://cdn.shopify.com/s/files/1/0428/7833/7187/files/53657368727.pdf
    • https://cdn.shopify.com/s/files/1/0436/2190/8640/files/kubitidijupev.pdf
    • https://cdn.shopify.com/s/files/1/0438/4086/4421/files/labunawufesero.pdf
    • https://cdn.shopify.com/s/files/1/0430/9948/8410/files/23959519067.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/80790303973.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/lobosepadaziwulutikibezu.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_off00006945.bin
258769c411ac0ce31a673f8ee21017f633d60fb695ae46c535eea1eb2e26d7db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6945 5252 bytes
font_01_sfnt_off00007b49.bin
617d1452ff0e1e975e0fb5eedb40c788fd39937d14d42bde9a24996ef0ce4ffa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B49 10092 bytes

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