Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9dac9cd176e8d62…

MALICIOUS

PDF

69.6 KB Created: 2020-08-27 13:22:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c60ca0c29a900b9542d537ed7b185fb SHA-1: 3a00460785ac3832d35936c107bce1c4ba977c0b SHA-256: a9dac9cd176e8d62621559fde3b0ea5c4f0048d3ce163c21c059985de34575d5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=fantasy+forest+story+breeding+guide'. Another critical heuristic indicates a PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute content. The document body itself is heavily obfuscated but contains the malicious redirector URL. The primary attack pattern involves luring users through these links.

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=fantasy+forest+story+breeding+guide
    • http://files.nastockdogassociation.com/uploads/1/3/2/6/132695780/xonagujorune.pdf
    • http://jifuseti.communityfhwarsaw.com/uploads/1/3/0/8/130874655/niledegipovi-fuledesifagi-dujemevebatix-jikobuzeda.pdf
    • http://vipax.yogadharmadowntown.com/uploads/1/3/0/7/130776330/1804873.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/lakelitawab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.pdf
    • https://cdn.shopify.com/s/files/1/0448/0018/0375/files/hedonism_tab.pdf
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/78148153239.pdf
    • https://cdn.shopify.com/s/files/1/0434/6776/7972/files/gana_bala_ambedkar_song.pdf
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/dixuwufipirafesulov.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/23816849720.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/ditisiraz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9612/9192/files/gawozewe.pdf
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/jll_residential_report_2019.pdf
    • https://cdn.shopify.com/s/files/1/0445/6490/6148/files/class_12_integration_all_formula.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_off0000ca6e.bin
ddb452b84531aa9c8091059152e56b21f92c3bda1eb90b7a1cd477ab7f269fc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6E 5240 bytes
font_01_sfnt_off0000dc54.bin
9e89ca22cd203a50093fb9b0a97fea3d11c0aeaea47dc265e00f43f95240f9a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC54 14836 bytes

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