Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56a1fae008c6fe3…

MALICIOUS

PDF

54.0 KB Created: 2020-08-24 05:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a50ec3bf587a5045530f1fec70475c1 SHA-1: 850bd7211e4672580f36fe41a34335db327d0cff SHA-256: c56a1fae008c6fe39323d5fba35eaa2fa5596af9a4d5357802a1d37885f2e5bc
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to the URL's keyword, suggesting a lure. The ML classifier strongly flagged this PDF as malicious. The primary attack vector is likely a phishing attempt to redirect the user to malicious 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.com/pify?keyword=ajay+atul+ganpati+songs+list
    • http://wetexulin.livejustwhatever.com/uploads/1/3/0/8/130814328/nudowudived-nelotutu-waxawuvumi.pdf
    • http://files.jennycrakes.com/uploads/1/3/0/7/130738912/854bd.pdf
    • http://files.elitesandvolleyball.com/uploads/1/3/1/8/131856627/d3df6b86f3c.pdf
    • http://gevaz.thesouthernbyrd.com/uploads/1/3/2/7/132740720/jevujej.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/pepivileguma.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/7683362484.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/39206030593.pdf
    • https://cdn.shopify.com/s/files/1/0432/0785/2192/files/zaxemawivew.pdf
    • https://cdn.shopify.com/s/files/1/0441/4488/5912/files/18400357970.pdf
    • https://cdn.shopify.com/s/files/1/0444/1725/3542/files/logic_circuit_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0433/5190/0310/files/46339224375.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/bug_bounty_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/5163/7141/files/biruxipugenegunideboru.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072be.bin
0e5cf880ca8dc1909cb02fb6b8b8e4f034cf70eb067a163354f2438867093194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BE 5056 bytes
font_01_sfnt_off00008414.bin
a03b80a5903261a8777d904ca762208123148ac71241080939bd0356ef6645c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8414 14876 bytes
font_02_sfnt_off0000b288.bin
fd7128002bae46e669085e720b51420840ef74b3f8b4e2910b97ad42420b693b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB288 7112 bytes

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