Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a5ceb930c98311…

MALICIOUS

PDF

37.4 KB Created: 2020-08-11 03:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ce53796f7aeb6a961c4262263c7d5cf SHA-1: 452410107737b36de41d684f2076e1450fbc4654 SHA-256: 50a5ceb930c983118980cb97f653c64aba4453a28019ab3614129aea14db216d
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate that this PDF is part of a link farm, likely designed to lure users to malicious sites. The primary malicious URL identified is https://ttraff.ru/pify?keyword=l+encyclop%25C3%25A9die+du+baraki+pdf, which is likely used to initiate a phishing or malware download chain.

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=l+encyclop%25C3%25A9die+du+baraki+pdf
    • http://jalus.leoafricanus.net/uploads/1/3/1/0/131071164/9792128.pdf
    • http://files.headwatersnextstep.com/uploads/1/3/2/7/132710661/nunovi.pdf
    • http://files.petermichaeldavison.com/uploads/1/3/0/8/130813982/bokavifurenis.pdf
    • http://files.laurenandresurbanist.com/uploads/1/3/1/6/131637773/641540.pdf
    • https://cdn.shopify.com/s/files/1/0438/2395/6125/files/zakufetesogugexewitusu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/ridadevubamogam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/79944144592.pdf
    • https://cdn.shopify.com/s/files/1/0435/6499/0632/files/18883094589.pdf
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/97181812222.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/online_converter_to_epub.pdf
    • https://cdn.shopify.com/s/files/1/0435/2301/4824/files/online_odt_to_converter.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/juzabivedolaguteli.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/plano_alimentar_para_diabetes_tipo_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/80037197080.pdf
    • https://cdn.shopify.com/s/files/1/0438/3975/0294/files/93183503115.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_off000050e2.bin
717f570b85f16bc6efa19f577a51823b769fd23b6a2c8e50aed3107cd1b9b0a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E2 5360 bytes
font_01_sfnt_off000062e3.bin
149c00673750a7b1b143834b0bd03c692ff41511376447bcd0f7485f9f030b4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E3 11460 bytes

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