Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f3338ff65f335b…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 19:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afe29a28e205e81dfb6481283462b83c SHA-1: 64c6b43c1948daec8c616f69bbf5e0b4315485c1 SHA-256: e7f3338ff65f335bc7c51116c9cc842df80a25a1e278cf293272627705e48caa
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users into downloading further malicious content. The document body and embedded links suggest a phishing attempt disguised as an academic document, specifically referencing a 'jkbose 10 class date sheet 2019 regular'. The presence of numerous external PDF links, many pointing to potentially compromised domains, further supports the malicious intent.

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.com/pify?keyword=jkbose+10+class+date+sheet+2019+regular
    • http://xokora.speakingevolution.org/uploads/1/3/1/6/131606255/b0ae96a9bc16.pdf
    • http://satagug.ashleyscleaningservice.org/uploads/1/3/1/3/131379394/35ae3384.pdf
    • http://demorixi.leisuretravelsrilanka.com/uploads/1/3/0/8/130874207/a398eb.pdf
    • http://files.krakela.com/uploads/1/3/1/4/131453250/mufoxarij.pdf
    • http://vusexuvi.ballyglasschildcare.net/uploads/1/3/2/7/132712116/9063475.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/13839571001.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/24703607590.pdf
    • https://cdn.shopify.com/s/files/1/0430/7930/3317/files/cabal_free_utorrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/3564/0487/files/28270655229.pdf
    • https://cdn.shopify.com/s/files/1/0438/0111/6833/files/77324586971.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/92753217328.pdf
    • https://cdn.shopify.com/s/files/1/0432/7358/4793/files/coca_cola_swot_analysis_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/weroxafilulixin.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/62309988696.pdf
    • https://cdn.shopify.com/s/files/1/0434/3922/7047/files/21741838740.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/49846481423.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_off00006299.bin
d47a0742e8ffb9bcfe47f4ae49c9840e8b522db47126ca142ea9c2c48e97e0a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6299 5876 bytes
font_01_sfnt_off00007683.bin
b0cd17e0306d25b57f9875e0c6bb8284496f12f88726c5e83582d9a5537f8b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7683 9896 bytes

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