Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a357a78068e8fc4…

MALICIOUS

PDF

39.3 KB Created: 2020-03-28 02:18:54 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8c961d7034e25385cff7268ab258e7a0 SHA-1: 996248879018ba8c163050e93add3326ddbc1265 SHA-256: 4a357a78068e8fc4ba9232be42d7d6e8aee463800cea30c51cb48effe8b6a9ef
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 contains garbled text and metadata, but the primary malicious activity appears to be the distribution of numerous links, likely to facilitate SEO spam or host malicious content. The heuristic PDF_URI also confirms the presence of external URIs within the document.

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://dylanwyke.com/uploads/1/3/0/6/130620563/130620563.html#9+dec%C3%ADmetros+cu%C3%A1ntos+cent%C3%ADmetros+tiene
    • http://collegeloanrepay.com/uploads/1/3/0/8/130814328/a454287c88df274.pdf
    • http://bsatroop36.net/uploads/1/3/0/8/130873709/jemepujularowukisigo.pdf
    • http://www.fairybrandmom.com/uploads/1/3/0/2/130272443/8409219.pdf
    • http://rohsalgebra2axb.com/uploads/1/3/0/7/130775232/32e6d925d2934.pdf
    • http://centroccc.org/uploads/1/3/0/5/130539093/dikegawimepesalu.pdf
    • http://rogersbellappleiphonereadreceiptssamsung.com/uploads/1/3/0/5/130550749/tefejevam_jewagefowamop.pdf
    • http://securetest.hancockseacadets.com/uploads/1/3/0/4/130435787/reradav.pdf
    • http://ajdevitt.com/uploads/1/3/0/7/130740242/fobox.pdf
    • http://justpurepro.com/uploads/1/3/0/6/130622083/3566284.pdf
    • http://midamericanthermal.com/uploads/1/3/0/6/130620919/0dd482.pdf
    • http://mangosteen.studio/uploads/1/3/1/1/131164048/doxibikip_zezema_ruxugaf_xupufetuso.pdf
    • http://e-junkie.us/uploads/1/3/0/3/130313081/solisel-rokaf-wuzekamujabipu.pdf
    • http://simpleupscrm.com/uploads/1/3/0/7/130738837/7e83e8d87.pdf
    • http://propelcnc.com/uploads/1/3/0/4/130476010/nutefojurididiforaf.pdf
    • http://scottandrews.ca/uploads/1/3/0/5/130543600/fipomile.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_off00006d6e.bin
2da3095014e23bd4664fde59eefd0dced3d6cb06e53c4f9ef33eed8527f66f7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6E 8964 bytes

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