Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b10d1dc04ab849…

MALICIOUS

PDF

41.9 KB Created: 2020-08-10 22:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5715e381de99c6ce5231fa4aa8d88770 SHA-1: 3943d204ef7a98bf04523ebb0ea7dd103345e4ea SHA-256: f9b10d1dc04ab84941077ba32e763adab516cf460641c5d4a5197c2221984011
120 Risk Score

Malware Insights

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

The PDF file contains a link farm with 26 external PDF links, many hosted on cdn.shopify.com, designed to obscure the primary malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies the URL https://ttraff.com/pify?keyword=apocalipticos+integrados+pdf as malicious. This indicates a social engineering attack aiming to lure users to a compromised 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=apocalipticos+integrados+pdf
    • http://files.dalewoodbaptistpdo.org/uploads/1/3/1/4/131453674/7862620.pdf
    • http://files.canalvoyagewebradio.com/uploads/1/3/1/8/131871705/regetexot-xitupobuliru-xoxawaxamame.pdf
    • http://files.misterfranklin.com/uploads/1/3/2/6/132681698/wewukukevo-rirobatulum-tubaxuwiriwaxar-puzukuxozoxupab.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/87830378804.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99914628395.pdf
    • https://cdn.shopify.com/s/files/1/0439/5335/6955/files/46523667919.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/28404584556.pdf
    • https://cdn.shopify.com/s/files/1/0438/5102/2501/files/97394226686.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/maxofu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/73056022078.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/ascitic_fluid_cytology.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5680/files/mukiwuxamaramotesavosoda.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5135/files/nukuf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000599f.bin
1192e9f9f8465c992c29f710137ea70d2f0a46d9f3d44ee1f157649f1b88f548		 pdf-font-stream PDF embedded font (sfnt) at offset 0x599F 5100 bytes
font_01_sfnt_off00006af2.bin
48ac4a0e8d18bac0ea47a8ad69323dffb8c09aeeae993f5ae3b8c462d66086fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF2 9884 bytes
font_02_sfnt_off00008cbf.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBF 4324 bytes

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