Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df9fb963dbb063d…

MALICIOUS

PDF

48.0 KB Created: 2020-08-04 11:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 506f73cc771f4273188dbccb07b519da SHA-1: 71836c952f4abd4191980fe0355ca3c2e4f88058 SHA-256: 7df9fb963dbb063de0fb9bb8d1f9c02b5dfa3596d9dc6c1beb3a5e589b688826
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the string 'Cinderella real story pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a link farm further indicates malicious intent to distribute malicious content.

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.ru/pify?keyword=cinderella+real+story+pdf
    • http://files.pinevalechildrenshome.com/uploads/1/3/2/6/132681901/f912dd.pdf
    • http://files.hatzbythesea.com/uploads/1/3/1/4/131482952/dimope.pdf
    • http://files.sumasacchurch.com/uploads/1/3/1/4/131407802/7b377e80253d5.pdf
    • http://files.dylanrockon.org/uploads/1/3/0/8/130874642/soxifeva-javumixefur-zarajik-ziwikak.pdf
    • http://files.fromthetopadventures.com/uploads/1/3/0/8/130813730/nifofa-retej-dadejunijevol.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/90009501680.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/bogixabatuseravitevizebax.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/gusodogedesosuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/podexatubisozuzipezuluxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/nunizigafananonodosalevo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8506/9478/files/xokizakanagob.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/dulolojapegakupejaxobu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9879/0301/files/78522957669.pdf
    • https://cdn.shopify.com/s/files/1/0436/9996/2024/files/wosetoxud.pdf
    • https://cdn.shopify.com/s/files/1/0432/0002/0635/files/wiwewu.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_off00007d82.bin
906ed2f7fa22ac054d796a338efca026e0691e170504e930f76b3823e6dfc640		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D82 5040 bytes
font_01_sfnt_off00008eb6.bin
4fd9f70d7069cf4d00c0091dadbb408cb0cdd9504b3aa901137ec5ab62dd0c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB6 10080 bytes

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