Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b1a646e7ff716f…

MALICIOUS

PDF

109.3 KB Created: 2020-07-28 06:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2793c9fc072a3cbfc04173467c00c78 SHA-1: 548c11c5347de98abf476033fb52574f84f45bb5 SHA-256: e2b1a646e7ff716f587555a9ab7b103a208684b1a80116908b6398308bd43e37
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=demon+slayer+anime+episode+guide', which likely serves as a lure to a more harmful destination. The document body, though heavily obfuscated, suggests a theme of 'Demon slayer anime episode guide', indicating a social engineering pretext.

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=demon+slayer+anime+episode+guide
    • http://files.nolasart.org/uploads/1/3/1/4/131453496/gopumaz-nimenujudivi-dukeli-xowoliregajo.pdf
    • http://files.poplarbluffdancestudio.com/uploads/1/3/2/6/132695472/5281392.pdf
    • http://files.emkdgenealogy.com/uploads/1/3/1/3/131398022/nugonifomu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/vabipifuvatiku.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/lubejidafagiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/0953/2316/files/99541100710.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6959/files/dabiremediga.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/kozukorowawipepesotujoluk.pdf
    • https://cdn.shopify.com/s/files/1/0433/8624/1187/files/garijugotebugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/88405329362.pdf
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/tojenodamazopom.pdf
    • https://cdn.shopify.com/s/files/1/0435/4244/6229/files/16036606974.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/73543841305.pdf
    • https://cdn.shopify.com/s/files/1/0427/5883/2294/files/zepanetuburabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4290/6007/files/koguxo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000d16d.bin
db56f34b7425bfe21bbe01e217351bd917ff7afe11046a55b46986f59cfb860b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD16D 44976 bytes
font_01_sfnt_off00015b97.bin
a98017c154b34f86d59f2833e51b834439e45040cc237e6024cf8fa4d0112705		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B97 5180 bytes
font_02_sfnt_off00016d1f.bin
2545dbe01eb26ead8a3527b17b015e64454e742600eb30d97f38fe1c457ad344		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16D1F 10488 bytes
font_03_sfnt_off0001912a.bin
6cbe3ac9e172e8bae055fba86092fcd672f61555ab01df205b93e20211473cad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1912A 16376 bytes

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