Malicious PDF — malware analysis report

Static analysis result for SHA-256 463b2d546281b647…

MALICIOUS

PDF

49.9 KB Created: 2020-08-20 00:00:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cd1e5461c1c1f6acf4c5f10f4baf6b1 SHA-1: fbd903ebe7d034dbb6d959a730c56ea4fe262e2b SHA-256: 463b2d546281b647aedf67978bcc51ff1006c1113a98afbc5676fa199812dc2c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=trust+deed+format+pdf', which is the primary indicator of malicious intent. The presence of numerous other PDF links suggests a link farm designed to improve search engine ranking for malicious content, further supporting the attack pattern.

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=trust+deed+format+pdf
    • http://files.rachelmariephotography.net/uploads/1/3/0/7/130776401/323248.pdf
    • http://files.asdontheroad2019.org/uploads/1/3/2/7/132712661/lejozugezite.pdf
    • http://files.knoxsundridge.ca/uploads/1/3/1/6/131607467/b38fad7bc.pdf
    • http://files.jnicolespa.com/uploads/1/3/2/7/132712006/xopivofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/15343352754.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/dufebare.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/tabune.pdf
    • https://cdn.shopify.com/s/files/1/0433/5878/1590/files/87534992812.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/97276459038.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/51093519451.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/zewogerofusojubitovibil.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/wezinirawudunatosavap.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5708/files/bexinovi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4556/files/que_es_bienestar_psicologico.pdf
    • https://cdn.shopify.com/s/files/1/0431/1823/1709/files/nevako.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/77467071355.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_off000085db.bin
5b87a84c5a2ce38b8f0568e6b52f634b6949cf6be9a3742567f35f568c539cf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85DB 5104 bytes
font_01_sfnt_off0000971e.bin
7f801dba31b52f5c769bdb6d14f13d84156e8bd597994530537db121b4627424		 pdf-font-stream PDF embedded font (sfnt) at offset 0x971E 10024 bytes

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