Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a33071742cbeb1d…

MALICIOUS

PDF

34.8 KB Created: 2020-08-07 09:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cf880ea2000b93736269d7e75dbb2dd SHA-1: 838146bb9af66e0d45c4a41a926686dfd6e24677 SHA-256: 1a33071742cbeb1de81866320f4a9cacb3bd402ea42ee064edd2479a2597c2ef
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but the primary link redirects to a known malicious domain, traff.com. This suggests a link-farming or redirection tactic to distribute malware or phishing content. The document body text, though heavily obfuscated, contains the same lure as the primary URL, indicating an attempt to trick users into clicking the malicious link.

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=biblia+de+referencia+thompson+pdf+descargar+gratis
    • http://files.michaeldavola.com/uploads/1/3/2/3/132302888/zopulojalog.pdf
    • http://files.meghantomasi.com/uploads/1/3/1/1/131163834/watovesorisiz.pdf
    • http://files.lapearlhaircompany.com/uploads/1/3/0/8/130813514/folobokonafoma.pdf
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/91244642037.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/tadorezezaluf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/34604920732.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/rimazumarubobil.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/61148432158.pdf
    • https://cdn.shopify.com/s/files/1/0436/0467/2675/files/63772231851.pdf
    • https://cdn.shopify.com/s/files/1/0437/5235/8042/files/diwirorup.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/57273891418.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5719/files/43758041772.pdf
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/walafe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/partnership_accounts_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.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_off00004660.bin
4935c0fc550e9741f17b50b4e92ef465184400e2d0627190d76d38bc7d215fa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4660 5760 bytes
font_01_sfnt_off000059cb.bin
17ea283a02cbb0c3f4c7491848f336640b1fbe06fbbf8a0eacf66154816f0b00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59CB 10324 bytes

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