Malicious PDF — malware analysis report

Static analysis result for SHA-256 db9e425455fd8014…

MALICIOUS

PDF

34.1 KB Created: 2020-04-05 11:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 95788caaca89eb6d749bf8b951819663 SHA-1: 75a6fe76ebbc74c92e7fcd83bada4f200ec45802 SHA-256: db9e425455fd8014e073b16e76cb56e5dc2766520a59dd06e4ee1f75efecb186
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, includes a reference to a song title and the wkhtmltopdf generator, suggesting a lure. The primary intent appears to be directing users to a network of linked PDF files hosted on various domains, which could be used for SEO spam or to distribute further 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://michaelajblogs.com/uploads/1/3/0/3/130379445/130379445.html#letra+de+la+cancion+de+candy+candy+en+japones
    • http://christianhomechurchflorida.org/uploads/1/3/0/5/130538922/e7457fd.pdf
    • http://slidemaxbelts.com/uploads/1/3/0/3/130323097/3b6cba7ba33.pdf
    • http://yakuzayoga.com/uploads/1/3/0/2/130289696/gizofedozuwat.pdf
    • http://striesfeldgroup.com/uploads/1/3/0/8/130874211/7351530.pdf
    • http://medicarebenefitsgroup.net/uploads/1/3/0/8/130873872/dupiz-xemejeseziruv-josavaxatiw-fegefasibawa.pdf
    • http://wnfishing.net/uploads/1/3/0/3/130379138/d7823a.pdf
    • http://lakewoodfencing.org/uploads/1/3/0/9/130969887/bidinazadudu.pdf
    • http://ofsocialmedia.com/uploads/1/3/1/4/131411088/8489667.pdf
    • http://www.jazminequill.com/uploads/1/3/0/4/130489066/9350979.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eee.bin
172fa3bd391fa4c718d5478ad9d03f6b8d0579a41bd19e00359ae73adb7a3be8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 7592 bytes