Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8308780627fec63…

MALICIOUS

PDF

43.5 KB Created: 2020-08-13 21:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c8df54d89f8e998fe1bd7a2748a0ed4 SHA-1: 84406ed1807e4fab554b30b6475ecf115deffe47 SHA-256: d8308780627fec6329ea10d689d656798f60b47d0bc97dec48c59ef499d1f0cb
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=android+9.+0+10'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links, many pointing to Shopify domains, suggesting an attempt to obscure the malicious destination. The document body, though heavily obfuscated, contains references to 'Android 9.0 10' and the redirector URL, indicating a lure to potentially malicious content.

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=android+9.+0+10
    • http://files.nyuasap.org/uploads/1/3/2/6/132682441/febatemif.pdf
    • http://files.dental-medical-connections.com/uploads/1/3/0/9/130969768/wakitexol-zimiramujexuvov.pdf
    • http://files.bridgepointmosman.com/uploads/1/3/1/6/131606208/rabavifebunit-pinixeb-danexuset-nebofon.pdf
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/capital_and_revenue_expenditure_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/50468199046.pdf
    • https://cdn.shopify.com/s/files/1/0432/4032/5282/files/enfoque_intercultural_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/cub_cadet_bagger.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/toefl_reading.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/woxedixunojurudejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6965/3663/files/guts_short_story.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/cara_membuat_bookmark_dengan_nitro.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/99691299586.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/76395478159.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/85876199620.pdf
    • https://cdn.shopify.com/s/files/1/0438/2470/9794/files/73911184481.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_off00006d45.bin
3d62f989fea98005a18fdeb97b502d0a7eb135ecfe36c87d6d4f3797a7dfd50c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D45 4772 bytes
font_01_sfnt_off00007d99.bin
4019a8ffaf01e9667553649b16dac65b7f1d5a7332e82e1f58cd1662804d0454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D99 10528 bytes

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