Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd382471ec5a9176…

MALICIOUS

PDF

39.4 KB Created: 2020-08-20 12:12:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9438fef6d53f64836d0388d5f8be6f6a SHA-1: a6bc1b8861d761488a9faf53df17b740a4471d37 SHA-256: cd382471ec5a9176fd30f4e3e543b2edc5bd002d4c4633c3816777f483fa5818
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic, suggesting a lure to a malicious site. The presence of a large number of external PDF links also indicates a link farm or SEO poisoning attempt.

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=baazigar+odia+film+song
    • http://zesofage.cutekitties4u.com/uploads/1/3/1/3/131381675/bagura_larumaje_rodulufumox_zawotipadur.pdf
    • http://files.aineedwardsconsultancy.com/uploads/1/3/0/8/130874582/jigadebib_luxijo.pdf
    • http://sojemevek.saritaredalia.com/uploads/1/3/1/0/131070719/xegagevarireto-sejurar-ladoji-xonito.pdf
    • http://tenite.tlawsonlab.co.uk/uploads/1/3/2/6/132695569/pobopete_nutuwitomes_sadazuwonepig.pdf
    • http://files.newenglandanxiety.com/uploads/1/3/0/8/130874598/wazetazodas.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7985/files/drayton_digistat_3rf_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/4708/3429/files/21735462039.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8744/files/78072636592.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zitadeduwifugegumav.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/kerozasegepepulak.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/barriers_to_communication_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/ralimewu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5584/0422/files/mitulumakujedox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/modifotebilipetafokonomux.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_off0000526b.bin
7ceb0f341f21253169031c98424ccaf6a7d8f4ebd2d7e4655b43a6491810fe0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x526B 5324 bytes
font_01_sfnt_off00006476.bin
377d858a799ab1f34d90bd6b1b86e09bb7b2b2b2f823960dec9aad0b63ad5f18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6476 14100 bytes

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