Malicious PDF — malware analysis report

Static analysis result for SHA-256 d369110f077cd3a9…

MALICIOUS

PDF

65.2 KB Created: 2020-08-29 20:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02924ad7a8c5fd24883eace0ab368666 SHA-1: f62a69ececc34d890923932745f4f9d0aad6bd46 SHA-256: d369110f077cd3a944c806cfdb2290481db9b5156813799de9848c49a433cd53
150 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm. The embedded URL 'https://ttraff.club/wix?keyword=big+head+games+unblocked' is flagged as malicious, suggesting it's a lure to a phishing or malware site. The document body, though heavily obfuscated, contains references to games and the malicious URL, reinforcing the lure. The presence of numerous PDF links, many pointing to Shopify, indicates an attempt to manipulate search engine results or distribute content through a seemingly legitimate platform.

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.club/wix?keyword=big+head+games+unblocked
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/lava_uke_chords.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/41291345303.pdf
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/gojufinamisifewikedomifuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/libro_alter_ego_1.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef897c7ff52441d5a2edf9cb7f65979b.pdf
    • https://static.usrfiles.com/ugd/b8c837_47290f84890a4e0d8e292dde9666bc21.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8f7d119cd7a4af69d3d0cf4b5e29ad9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b98bb2402670435e9064fa46bdc5ad28.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dedc56197484533b1324d7af58c9926.pdf
    • https://static.usrfiles.com/ugd/b77b08_d1132b49516446c9a4ad0b1037a085a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_a1aa3331b76b4f1cab0b80ad2e97d24b.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0982783c8a74a7fbd26e7c57e3af696.pdf
    • https://static.usrfiles.com/ugd/87fdc7_ca5c08472ac54205bcb55b50ee4fbc51.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_off0000c256.bin
795191da62d55e9050b194506ed8d614e440ae6898f6654b939e730ebcf37d01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC256 5512 bytes
font_01_sfnt_off0000d4ea.bin
f416ef27dc32bcb20b91406602d812ad0202045b8b3e6fc895e1d7e0990d5904		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EA 10192 bytes

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