Malicious PDF — malware analysis report

Static analysis result for SHA-256 53259c09034e712c…

MALICIOUS

PDF

48.9 KB Created: 2020-08-08 05:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47bf724695aec42257600e541c96d5fa SHA-1: 0a832c9b2a61f936b8e7a6f237c4457a43dccae7 SHA-256: 53259c09034e712c0cd658be1abc80c4a08958b73ad3927692f87514657540f7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, however, directs to 'ttraff.ru', which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this malicious URL, suggesting the intent is to lure the user into clicking the malicious link for further redirection.

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.ru/wb?keyword=entamoeba%20histolytica%20morfologia%20pdf
    • http://files.lanaonwray.com/uploads/1/3/1/0/131071252/9363770.pdf
    • http://files.ayishamoss.com/uploads/1/3/2/6/132683181/jemulupaxilaz.pdf
    • http://liwoxik.crowsnestpasspublicartgallery.com/uploads/1/3/1/4/131438641/6051788.pdf
    • http://danoresaj.ohioballroom.com/uploads/1/3/1/0/131070450/2902197.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdf
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/minecraft_forge_energy.pdf
    • https://cdn.shopify.com/s/files/1/0435/6420/4193/files/46001687608.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2583/files/jafovelurovironokuto.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/12268330706.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/xaravosafeliker.pdf
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/49437979352.pdf
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/bloodborne_arcane_haze.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/92255295510.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/raxat.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/16066230027.pdf
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/elementary_differential_equations_10th_edition_boyce.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_off00007bcf.bin
75336fd704a060ab92ba99a81e135b56a6265a3efa5d667ac5503b06fde77fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCF 5768 bytes
font_01_sfnt_off00008f54.bin
ef6913d531d22119915c094dca927e8bdcadb33432ce0c3f6250801331529fc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F54 11432 bytes

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