Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07ce8b49e6d12d2…

MALICIOUS

PDF

31.7 KB Created: 2020-06-02 14:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c37c41cf009999dfe3442aaa825ca540 SHA-1: a4876575855747b73befe24086378805b3243f46 SHA-256: b07ce8b49e6d12d223548aa422e016d8bf43ad318a992449fd14a9eaab35615f
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, suggests a lure related to a 'coloring book'. The primary intent appears to be directing users to a network of suspicious domains, likely for SEO spam or to host further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://molarise9.com/uploads/1/3/0/6/130605422/130605422.html#forest+animals+coloring+book
    • http://giltnerinternational.com/uploads/1/3/1/3/131380397/zonanazim.pdf
    • http://bravemotorsport.com/uploads/1/3/0/7/130739663/c88eb46f6bd3.pdf
    • http://kylomoon.com/uploads/1/3/0/6/130604855/16d5085431.pdf
    • http://thelittleagencydfw.com/uploads/1/3/0/4/130488295/pojiwifimoki.pdf
    • http://crowncartelcelebrations.com/uploads/1/3/0/7/130739062/9440439.pdf
    • http://whitelinecreations.com/uploads/1/3/0/7/130739975/899222.pdf
    • http://threepicks.com/uploads/1/3/0/4/130435842/4725817.pdf
    • http://chameleonmemory.com/uploads/1/3/0/5/130544823/16a1a77f2f370a.pdf
    • http://molarise9.com/uploads/1/3/0/6/130605422/terms.html
    • http://molarise9.com/uploads/1/3/0/6/130605422/dmca.html
    • http://molarise9.com/uploads/1/3/0/6/130605422/policy.html
    • https://kajoguk.files.wordpress.com/2020/06/togetefi.pdf
    • https://kexunezelip.files.wordpress.com/2020/05/54971770713.pdf
    • https://fuzevibob.files.wordpress.com/2020/05/funegidejurivotadu.pdf
    • https://sokexoxabeba.files.wordpress.com/2020/06/37211434887.pdf
    • https://makilope.files.wordpress.com/2020/06/95626958530.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_off0000525c.bin
e2ff13f215a67bd568d2879966776007ec3089f3f9c5eb919f5443d25cb5b875
pdf-font-stream PDF embedded font (sfnt) at offset 0x525C 9664 bytes