Malicious PDF — malware analysis report

Static analysis result for SHA-256 24abe3393cbad934…

MALICIOUS

PDF

46.4 KB Created: 2020-08-20 10:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9d1eb91316f727a509b17d48dc90f06 SHA-1: a4fde73234970082e122fbb03492a6257e2f93d7 SHA-256: 24abe3393cbad934c7ac3b37920b435c43c08b6c0897a1ce089cba690f2491c6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=perry+anderson+el+estado+absolutista+resumen+pdf'. This suggests the document is designed to lure users to malicious infrastructure. The presence of a link farm heuristic further supports the malicious intent of distributing links to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=perry+anderson+el+estado+absolutista+resumen+pdf
    • http://files.unnatilok.com/uploads/1/3/1/8/131871994/dodojozo.pdf
    • http://dirifas.darknessisfalling.com/uploads/1/3/0/7/130776225/gadubovumires.pdf
    • http://files.longsightnursery.co.uk/uploads/1/3/0/7/130776054/a9fb4517c8d.pdf
    • http://nemapikuw.shadyriverlaporte.org/uploads/1/3/1/1/131164199/5c2ff947e6b.pdf
    • https://cdn.shopify.com/s/files/1/0435/6515/4463/files/baixar_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9111/6700/files/agisoft_photoscan_professional_full.pdf
    • https://cdn.shopify.com/s/files/1/0428/6044/5855/files/dujekuw.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/bromelin_xarope_bula.pdf
    • https://cdn.shopify.com/s/files/1/0429/4272/6310/files/process_flow_documentation_template.pdf
    • https://cdn.shopify.com/s/files/1/0440/5598/6341/files/difference_between_somatic_and_autonomic_nervous_system.pdf
    • https://cdn.shopify.com/s/files/1/0447/8782/6854/files/goldman_sachs_asteroid_mining_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/6837/2632/files/97869635426.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/zipegupudos.pdf
    • https://cdn.shopify.com/s/files/1/0429/2752/1948/files/fonazedajikiti.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_off000071b6.bin
2ebce4a909804652fcdd2686aff1039f01436597016278ddabb5393c1cd6be63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B6 5432 bytes
font_01_sfnt_off00008415.bin
c5dc23069cf652a3efe3ac032addb5e0f2877236aa4a3016d5617c6a4819c0ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8415 11672 bytes

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