Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade6fd34ed723d96…

MALICIOUS

PDF

41.9 KB Created: 2020-08-29 15:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b05f3e01a1cdc777e13cf67e2e8fb5fc SHA-1: d94b9c299dd33a45f0b88526201bc0bbe4d4c974 SHA-256: ade6fd34ed723d96eae81a001208d5d506965ba48cca25292581fb95eb1907b6
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a known malicious redirector. The presence of a link farm suggests an attempt to distribute malicious content or phish users.

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/wix?keyword=padded+cell+experience
    • https://cdn.shopify.com/s/files/1/0428/4484/8295/files/92719034856.pdf
    • https://cdn.shopify.com/s/files/1/0428/4134/2108/files/ruzaladilisitemixiwupesu.pdf
    • https://cdn.shopify.com/s/files/1/0445/5736/9503/files/excel_activesheet._protect_drawingobjects.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/73676382282.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/sedevuzosulapevasopiwugas.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/gabiburivesepi.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b8570033c1c410996df5bb174229800.pdf
    • https://static.usrfiles.com/ugd/b8c837_5abee67d93264a0a8fa8ec8f88a3df11.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_b0a9e0ccd8be439d94433dafab5bb953.pdf
    • https://static.usrfiles.com/ugd/b8c837_f9a30bc7090a44ca80bfe79b7bc7f257.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dbb8c5f67c64c6e89d56df9f1fa27d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_585e8478dc684b0b9b27ade8e9e7a858.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_off0000671d.bin
4ce8fdc4ba00e207a1f8a61f0dbfb49a4bd7fd2044dc09d93d3ef4a83a773f11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671D 4956 bytes
font_01_sfnt_off00007805.bin
b946a4a662c573e313676fb29bb5de71622d683851bdf4c7a5c2a1f56467a0bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7805 10368 bytes

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