Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5c31b908a2d31b…

MALICIOUS

PDF

48.7 KB Created: 2020-08-19 17:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 598345479839e9743bfeb99e864fc118 SHA-1: 361ea72ca90a3f002b733793add1f8f72b5bdebf SHA-256: 7e5c31b908a2d31b607e99e7d1ffd220655fd16dce22f0ae423b3811a2206653
120 Risk Score

Malware Insights

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

The PDF file contains embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Neoclassicism definition pdf' and includes the malicious URL. The presence of multiple external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL is https://ttraff.ru/pify?keyword=neoclassicism+definition+pdf.

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/pify?keyword=neoclassicism+definition+pdf
    • http://juket.wompostcoop.com/uploads/1/3/1/4/131454762/bukojo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6026/4086/files/56187728385.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/mowokitulon.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/59453996335.pdf
    • https://cdn.shopify.com/s/files/1/0459/1386/6389/files/kukudowofarikijox.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/final_fantasy_tactics_psp_iso.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/logical_reasoning_practice_questions_for_cat.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/definicion_de_contaminacion_ambiental_segun_autores.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/60916129967.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6815/files/naruto_op_13.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/55819667870.pdf
    • https://cdn.shopify.com/s/files/1/0433/8221/0725/files/gatomugegamasifegozasis.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_off000082c1.bin
74fb8b9d0cde7dc8783b18b35b8af88aeaf454c7dde16ccff94cbd17e62a856e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C1 5176 bytes
font_01_sfnt_off0000944c.bin
537786cd1dc4de7b8c683c1b37c6870d0fed51140fce48e9eeca639ca56b8ad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x944C 9832 bytes

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