Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc59328d7a02604d…

MALICIOUS

PDF

50.3 KB Created: 2020-04-11 00:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 166e4d85bd726acaf87af361b71bc7ce SHA-1: 48632f510c4045ae0c6786f5b6330a6c24a77952 SHA-256: cc59328d7a02604dbed88e278af2365d365e2b6baa3677bf3bc660c7f87f372a
72 Risk Score

Malware Insights

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

The PDF contains a large number of external links, indicating a link farm SEO tactic, likely to distribute further malicious content. The document body, though heavily obfuscated, contains a URL that appears to be part of this distribution network. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://aftercareusa.studio/uploads/1/3/0/6/130604979/130604979.html#general+science+study+material+pdf+in+telugu
    • http://rpmaa.org/uploads/1/3/0/4/130476412/054d24e294b.pdf
    • http://focus-on-recovery.org/uploads/1/3/1/3/131383864/lovuresoxuzaxixer.pdf
    • http://southcoaststrong.com/uploads/1/3/0/5/130544468/xibemopamajuwidok.pdf
    • http://vanessalh.com/uploads/1/3/0/9/130969879/3403451.pdf
    • http://crm-info.com/uploads/1/3/0/4/130483957/8682747.pdf
    • http://stylesetc.net/uploads/1/3/0/6/130621082/5435530.pdf
    • http://rustedanchorfarm.com/uploads/1/3/1/4/131406284/5591764.pdf
    • http://recuerdosenfoto.com/uploads/1/3/1/0/131070236/6741545.pdf
    • http://ashenclay.com/uploads/1/3/0/8/130873776/gubuf_nugokog_toxow_lufoni.pdf
    • http://lisahonigweavings.com/uploads/1/3/0/5/130588581/8729147.pdf
    • http://tameingenieros.com/uploads/1/3/0/4/130488861/705d3759ee6.pdf
    • http://lisacrooke.com/uploads/1/3/0/2/130291689/8065f517.pdf
    • http://moadim.net/uploads/1/3/0/6/130605472/1006524.pdf
    • http://moadim.net/up
    • 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_off00008706.bin
28462935148ef279f3476ddcee601fc25b24f9cdc115c932425bc307b53aa787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8706 8460 bytes
font_01_sfnt_off0000a774.bin
c6c28444bcd94379862b6cc7f8cfcdbcdaeb026857ccdb099d87626a561054a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA774 16092 bytes

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