Malicious PDF — malware analysis report

Static analysis result for SHA-256 97804af8bda791ba…

MALICIOUS

PDF

64.1 KB Created: 2020-04-24 02:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 93a2de990a4a60dd96a3d92d12973a47 SHA-1: bc75891dee306bfe536fd491acb49f590b2b57c9 SHA-256: 97804af8bda791ba23a4e7d1124ab43334670dd4fa55faf494fd7e0eb54156fc
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which are structured as SEO-optimized links pointing to other PDF documents. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, contains a URL that matches one of the extracted links, indicating a potential lure. The primary purpose appears to be directing users to external, potentially malicious, content.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://victoriasaesthetics.net/uploads/1/3/0/4/130488220/130488220.html#cimbalom+sheet+music
    • http://etosharobotics.com/uploads/1/3/1/3/131379605/fobarinomegazu.pdf
    • http://vogelsigns.com/uploads/1/3/0/7/130738714/f242d62468f2.pdf
    • http://amazingsoundnh.com/uploads/1/3/0/6/130603842/6811806.pdf
    • http://hobohandyman.com/uploads/1/3/0/5/130546294/8cee637039.pdf
    • http://meistergramemb.com/uploads/1/3/0/2/130287457/laximimibamov_gagatazop_xiloxotakajumo.pdf
    • http://buildingblocksnurseconsulting.com/uploads/1/3/1/4/131438784/jaxizenikedudo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000940c.bin
f1b1911d01ea9ccfe028c2bfb930c4979b4b454ae89636b1e1645683bca21a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x940C 9772 bytes
font_01_sfnt_off0000a8f2.bin
53d6c8bbc41c6cb2a0fcb78144fb6ca2ffc915d0e430cb3bbe123618b5d5621d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8F2 12048 bytes
font_02_sfnt_off0000cfcc.bin
31dfa1f7f7c6f65e0721ef5dbb3da18492db93ff6408361a3442c7c75f96e1a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCC 4064 bytes
font_03_sfnt_off0000dde3.bin
3764d61f612df3246c0d0917a0a30e6317d6cbf5f641a412a5537d53c71a81d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE3 16308 bytes

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