Malicious PDF — malware analysis report

Static analysis result for SHA-256 514aead7daa33df9…

MALICIOUS

PDF

42.2 KB Created: 2020-08-05 14:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8494285da78af2fe8ac371fd8e88ff7a SHA-1: 467c93362db136962cfe911e4a6cc3b93c104e4a SHA-256: 514aead7daa33df9165da8e9dfda0402a59da9a3312f246c5cbc3bcc31345692
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=benefits+of+entrepreneurship+education+pdf'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a mass of external PDF links, suggesting an attempt to manipulate search results or distribute further malicious content. The document body is heavily obfuscated, but the presence of the malicious URL is clear.

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.cc/pify?keyword=benefits+of+entrepreneurship+education+pdf
    • http://dumawo.lundeensliquor.com/uploads/1/3/1/6/131637814/wazizi.pdf
    • http://files.travelinforlove.com/uploads/1/3/1/4/131437669/3631267.pdf
    • http://files.nlacademy.net/uploads/1/3/2/7/132740949/nuzefabasef_vokek_nubaxinib.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6716/files/soxefufala.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texojorigerusoxuduk.pdf
    • https://cdn.shopify.com/s/files/1/0438/3349/1606/files/bra_ket_notation.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3253/files/woodland_park_weather.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/lasopirebusamez.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/74886544291.pdf
    • https://cdn.shopify.com/s/files/1/0433/5419/4070/files/66312240314.pdf
    • https://cdn.shopify.com/s/files/1/0439/2694/5947/files/unterminated_substitute_in_regular_expression.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/30432574658.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niborenegukudokeregus.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_off00006710.bin
54fc3eb0537dceee1087f8b4ffb0e1e1ced7e1dd600cd67a28e56ada8249441c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6710 5260 bytes
font_01_sfnt_off000078f1.bin
5ac9bebe1b5fe211d4661ac0c3f67ef283cac629fe1337eddcd711f6c1830c5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F1 10212 bytes

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