Malicious PDF — malware analysis report

Static analysis result for SHA-256 54b76bc90718591e…

MALICIOUS

PDF

46.4 KB Created: 2020-04-25 09:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3b8ac6ec09b400e4080b6282c1b5d687 SHA-1: dd92ca568343528ed89fbb8ea6f5572e5716214e SHA-256: 54b76bc90718591e2b1d6bc6e3f74afc049ef417850f8cf9157290a1b8204f13
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used to create SEO link farms for search engine poisoning. The document body is heavily obfuscated but contains references to the document title and authoring application, suggesting it is a lure. The primary purpose appears to be directing users to a network of suspicious URLs, likely for further exploitation or phishing.

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://mccorkleagsales.com/uploads/1/3/0/7/130739483/130739483.html#historia+del+atletismo+en+el+peru+pdf
    • http://caxschool.com/uploads/1/3/0/8/130814993/jevelosivovopunulit.pdf
    • http://enrtwinz.online/uploads/1/3/0/2/130288430/zedixamopo_kejorezakaxuz.pdf
    • http://fullhouseservicosterceirizados.com/uploads/1/3/1/4/131453850/sirimexuv_bawuwik_xasuresikek_tonuzagonowuxad.pdf
    • http://themodellifestylists.com/uploads/1/3/0/9/130969921/vemumuxu.pdf
    • http://scubieee.com/uploads/1/3/0/3/130323266/5933170.pdf
    • http://teamrockyou.com/uploads/1/3/1/4/131408086/nijurevuguwazimexuzi.pdf
    • http://folkswall.com/uploads/1/3/1/4/131453199/bumanadele-vovedinupofaga.pdf
    • http://bigdigearthworks.com/uploads/1/3/0/5/130588294/muradiguvebew-sulimokof.pdf
    • http://tinderboxceramics.com/uploads/1/3/0/6/130604947/7543212.pdf
    • http://janpaulwolff.com/uploads/1/3/0/7/130740264/zotedik.pdf
    • http://pof-customercare.com/uploads/1/3/0/2/130287893/bigixuluduke_mokemu.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_off0000742d.bin
74ecddb8613b540b5e420e5d141a963316020e73e3c37f56746dd4bb1a243430		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742D 9748 bytes
font_01_sfnt_off000096aa.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96AA 16036 bytes

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