Malicious PDF — malware analysis report

Static analysis result for SHA-256 b250619b063f8e9f…

MALICIOUS

PDF

47.7 KB Created: 2020-08-03 00:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88f03d2361b0bec1a2c1299a07ea28fa SHA-1: feedb24712b3460ceabc8b18a72b33f2945b74e0 SHA-256: b250619b063f8e9f8c853ef577136e369abb8c0c8b01310508c4d6a59b3bef8e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=linksys+2000+firmware'. The document body, though heavily obfuscated, contains references to 'Linksys 2000 firmware' and the malicious URL, suggesting a lure to trick users into visiting a potentially harmful site. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing 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=linksys+2000+firmware
    • http://files.lyonsbaskets.com/uploads/1/3/0/9/130969054/digen.pdf
    • http://files.yamawarashi.com/uploads/1/3/2/6/132681558/sujapovosokote-xateso-munelawaxo.pdf
    • http://files.bumblebeenola.com/uploads/1/3/1/6/131606284/bunomovaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/18030476968.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/48161504822.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/sajopugiribadogoxafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0167/files/dakitaseto.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0739/files/rofenatizigepeguxusifibak.pdf
    • https://cdn.shopify.com/s/files/1/0434/1707/5868/files/vanevodukuwolugisoje.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/bipijozevanegesemojedi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/juwabu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/geguwikopodujagajoteni.pdf
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/zuzewatiwefidadizatij.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_off00006f9d.bin
4bf365af47d5dc25cdfbab85c2feca5496dc16a46793805c50d98b40ca51228b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9D 5356 bytes
font_01_sfnt_off000081df.bin
b3eb6c205db42081523ccfdc271ce4ce443cc4ae10b6073e10281f36bca75722		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81DF 14868 bytes

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