Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d860cc79ac2d153…

MALICIOUS

PDF

57.5 KB Created: 2020-08-30 16:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e02abd8c8de3ede8942424a7a2b490f SHA-1: d21c9608eda654b35544cba8f64b8ed772090e3d SHA-256: 9d860cc79ac2d1534cca5628c8698a37496c855b766b04e8fdbb17f96220ea1e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=funciones+de+un+director+de+escuela+primaria+en+panama'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure. No scripts were extracted, and the file type is PDF, indicating a likely social engineering attack via a malicious link embedded within the document.

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.cc/wix?keyword=funciones+de+un+director+de+escuela+primaria+en+panama
    • https://cdn.shopify.com/s/files/1/0433/8135/8759/files/45809277998.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/poliarteritis_nodosa_medigraphic.pdf
    • https://cdn.shopify.com/s/files/1/0432/8734/7364/files/tanatologia_libros_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0434/2182/7239/files/20886385330.pdf
    • https://cdn.shopify.com/s/files/1/0436/9983/0952/files/casti_guidebook_to_asme_b31_3.pdf
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/47211297820.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/38480860299.pdf
    • https://cdn.shopify.com/s/files/1/0431/0027/4845/files/liwopon.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3653/files/cidos_e_bases_nomenclatura.pdf
    • https://cdn.shopify.com/s/files/1/0434/6521/2066/files/65520072644.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/10411275646.pdf
    • https://cdn.shopify.com/s/files/1/0435/0204/3288/files/edward_said_out_of_place.pdf
    • https://static.usrfiles.com/ugd/0047a4_118e73542c1543319eb94c7b773b3394.pdf
    • https://static.usrfiles.com/ugd/aff7ca_4340f464a77049e6b63d0a48cb99e60f.pdf
    • https://static.usrfiles.com/ugd/daca0d_320a9687789648de9bec5235b2679491.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_off00008d35.bin
1b7b16de3c03dc8bf89e8084aae637ae6c6928e7585d8b5827de507bde1f45e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D35 5176 bytes
font_01_sfnt_off00009eb0.bin
b3b5bf5d45ddfad9d27b51ec4d7a4ff1c2e96f73af7799cdd336145194261c25
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB0 10564 bytes
font_02_sfnt_off0000c143.bin
04c641d0aedeaa8c494855f42a2e9ae6fad9e3679126e7dc5c08fccc4b41c292
pdf-font-stream PDF embedded font (sfnt) at offset 0xC143 16112 bytes