Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bed877d61369dd0…

MALICIOUS

PDF

39.8 KB Created: 2020-08-30 21:02:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b35e13ef585ffecf7a16244543db1f38 SHA-1: 0104709725a6b6fa62fa01dffd2b360f69c7d828 SHA-256: 8bed877d61369dd081617addb55a4fcd42b8902df637bcfa7248dbee969e4445
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Ford sport trac towing capacity' and the URL itself, suggesting a lure to a malicious site disguised as relevant content. The presence of a malicious redirector link is the primary indicator of malicious intent.

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=ford+sport+trac+towing+capacity
    • https://cdn.shopify.com/s/files/1/0443/4444/3036/files/energia_eolica_en_el_peru.pdf
    • https://cdn.shopify.com/s/files/1/0437/6884/0341/files/i_m_boring_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/37245101291.pdf
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/zaxanoruf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5823/2473/files/15691852462.pdf
    • https://static.usrfiles.com/ugd/6290de_8e4c976146bc434887917f07a833490a.pdf
    • https://static.usrfiles.com/ugd/b8c837_16a197206b3d42e798e881b61fe74dd9.pdf
    • https://static.usrfiles.com/ugd/ee6770_71795daf50104f8f938e3060681cf708.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_decf9ebe6f444025ad93280f15f70815.pdf
    • https://static.usrfiles.com/ugd/963627_587226625b2f4d06be9f4834c57fadc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_0875eb0304ff4d1c9568b40c750db291.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_off00005cdf.bin
e04399e095eda3dfd7bd52c44eecb8495e4fc24c56e939b4a36b7fa37a925095		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDF 5356 bytes
font_01_sfnt_off00006f40.bin
3b72a610c375636279765819fa418512523a3ee2586ec3e80264dc57da1f7d15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F40 10256 bytes

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