Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0bc3e1482f6384b…

MALICIOUS

PDF

40.5 KB Created: 2020-08-30 18:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51ff9482f5ed5f514bf3900f00273e6e SHA-1: baec4d3212696e0a1f2c4ab19ba5a7e3b1a330f2 SHA-256: c0bc3e1482f6384bf9b42f01976e935fa9808433f69f4a4e2b6d7c78c9ccab5d
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, identified as a PDF link farm. One of these links, 'https://ttraff.me/wix?keyword=planisferios+con+coordenadas+geograficas', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links to static.usrfiles.com, while marked as benign, indicates a pattern of using link farms for distribution.

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.me/wix?keyword=planisferios+con+coordenadas+geograficas
    • https://static.usrfiles.com/ugd/f96b02_b60a4ecab4724b36923ab3117515841d.pdf
    • https://static.usrfiles.com/ugd/a107db_bf48db88dc8b4ea09ac0ea80e20361c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_9171afc45e8b4b4cacd8a07933505dd2.pdf
    • https://static.usrfiles.com/ugd/b8c837_a1ccccb3e0484a8fbc947a367d1542cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_ceefa6617de046cab9af5e0a9b652215.pdf
    • https://cdn.shopify.com/s/files/1/0438/2726/5693/files/49442273244.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc679750b13547dd99d7637bdc02d937.pdf
    • https://static.usrfiles.com/ugd/b6bf5b_9d57cac65de047e2b765abc90293f77d.pdf
    • https://static.usrfiles.com/ugd/b8c837_5df9caff6de54f7495ebebf00a58924b.pdf
    • https://static.usrfiles.com/ugd/cd79e3_bc30074f8af644059ce46d362f8d614f.pdf
    • https://static.usrfiles.com/ugd/87fdc7_3738e061e76e4f13949ef269502039f3.pdf
    • https://static.usrfiles.com/ugd/8c0e65_79b9d4a03e2c4be4924fa0237ad8b8b7.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_off00005ea1.bin
b1a7b58848ac84095c214b523c6db3ae1b3ef28d8f3548606283eae6b46c3018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA1 5192 bytes
font_01_sfnt_off0000704e.bin
eefd431deb859520175d1755895f3f6d54585e127f5f6d0f211bd5a9894e8835		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704E 10940 bytes

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