Malicious PDF — malware analysis report

Static analysis result for SHA-256 d208d9c4fe626b74…

MALICIOUS

PDF

33.9 KB Created: 2020-08-21 04:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dbcaa5cc94e014450c94ba6eb1caf9e SHA-1: 233102014c8e111fc35a76a4e8d65ca2f49cfa19 SHA-256: d208d9c4fe626b74f1e6112efaf8916483fbd42166d80e87282d8b06f1c4da6b
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to product keywords and the malicious URL itself. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site.

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=zapatillas+converse+plataforma+mujer
    • http://xepigefuw.houseofblackart.com/uploads/1/3/2/3/132302782/c78de0aa2.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/46966559173.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/repipamumemeputu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1136/5272/files/xepenurijebasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/zixotorowizototar.pdf
    • https://cdn.shopify.com/s/files/1/0463/0786/8834/files/whatsapp_watusi_para_android.pdf
    • https://cdn.shopify.com/s/files/1/0436/5749/4686/files/contemporary_mosque_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/le_spleen_de_paris_english.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_off000046a9.bin
2aa469e2736ffec5d5cc5223affd0c9ae649efcd1e5861aec317308b13251c94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46A9 5256 bytes
font_01_sfnt_off0000587a.bin
9faa6f454db5a973559a52f8591f0bfb0019966d7c96687087f5d93f7bece472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x587A 10212 bytes

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