Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3cace1f7c62d618…

MALICIOUS

PDF

49.3 KB Created: 2020-03-31 22:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 36a42411d1f8d6bdde5ad479736914cf SHA-1: 91ecdd298b228f4b136a7aafcaa53abd83c538a4 SHA-256: a3cace1f7c62d618970e1e9bec3e6705a36965d74df4f99a205eb7cea68e6a39
70 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, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve search engine rankings for malicious sites. The presence of a 'download button' lure further suggests an intent to trick users into interacting with the document's links.

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://greenacreco.com/uploads/1/3/0/7/130775700/130775700.html#aisc+structural+steel+shapes
    • http://assetrecoverylt.org/uploads/1/3/0/8/130874111/lavizozoluwiwitu.pdf
    • http://rentrollhub.net/uploads/1/3/0/6/130639221/5947853.pdf
    • http://appareldr.com/uploads/1/3/0/7/130775088/fuzagaxalexugef_zobet.pdf
    • http://pusimeik.ee/uploads/1/3/1/0/131070692/xagedijidelarefofoxa.pdf
    • http://nationalbusinesseducationweek.com/uploads/1/3/0/7/130740066/bemibef-pijiz-lagaxekadotode-bapajiz.pdf
    • http://spatacular.ca/uploads/1/3/1/4/131454916/robilamikilo_xuxazadupuzux_lubadijulumin_nopolubafe.pdf
    • http://modaallettante.com/uploads/1/3/0/6/130639024/romijanakugipen.pdf
    • http://greencleaningservices.org/uploads/1/3/0/8/130813851/donali-dumoxumis.pdf
    • http://mediamilitia.org/uploads/1/3/0/4/130476188/kinepujafofatefe.pdf
    • http://atvf3x3.com/uploads/1/3/0/9/130969355/nomudonegopabe.pdf
    • http://minibaraddict.com/uploads/1/3/0/2/130289749/6939944.pdf
    • http://feeneysridingstables.com/uploads/1/3/1/4/131407377/mukojugufavawixe.pdf
    • http://getluckygolfcars.com/uploads/1/3/0/6/130603798/pexujomabav-bomaxixadusu-kixesesazes.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_off00009ad2.bin
0d40fcfe45cee793a32ba23f6dd801644f288e18aadf457a7dfd3d04f79da87b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD2 6912 bytes

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