Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ee4fc7664fdf06…

MALICIOUS

PDF

41.6 KB Created: 2020-08-07 07:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70c9c627c82c58d82fb493ee1fbc1294 SHA-1: 6d14a01dbe7bbc537e6bf62e976087a3098f0f29 SHA-256: 24ee4fc7664fdf06584e64f102ddabb7cfa7ca35a4c12022c02d2ec2161aac8b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL, 'https://ttraff.com/pify?keyword=biometria+hematica+pdf+unam', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting an attempt to lure users to external, potentially malicious, sites.

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=biometria+hematica+pdf+unam
    • http://files.changingfutures.org.uk/uploads/1/3/1/6/131606087/mufegesitawiko-matuwomap-xivekun-vokozufeletefuz.pdf
    • http://files.adrianahammond.com/uploads/1/3/1/4/131452846/1074787.pdf
    • http://files.renewyourminddaily.com/uploads/1/3/1/4/131453674/7700a8b95.pdf
    • https://cdn.shopify.com/s/files/1/0434/0885/1098/files/78198828025.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/getobifur.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/90804462890.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/gatuvakumomudat.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/41036070994.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/74986950183.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/47912894916.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/33186526761.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/lubukinidis.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2550/files/urbanismo_tactico.pdf
    • https://cdn.shopify.com/s/files/1/0435/3523/7269/files/rebifimemiravule.pdf
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/27140776123.pdf
    • https://cdn.shopify.com/s/files/1/0434/1094/8254/files/riwulaletizu.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_off0000648b.bin
fda6af594f9c52f7cac37faa395a312898a35f55fc56dad3f95d26532f6b4008		 pdf-font-stream PDF embedded font (sfnt) at offset 0x648B 5236 bytes
font_01_sfnt_off0000762c.bin
42bbf7231d9e7583e8faf1ffa5b4f67e9c3928c02ae62630ede51b9caed80e20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762C 10404 bytes

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