Malicious PDF — malware analysis report

Static analysis result for SHA-256 c31b2c04becd4f39…

MALICIOUS

PDF

38.5 KB Created: 2020-05-14 22:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5f4638f609f9400ee4fe1525f549a2e SHA-1: 681da984a75f1a6afbb85dd4c8142ff45bb33583 SHA-256: c31b2c04becd4f395c63e3998e5da1f65185879100673645a0c933f980062519
70 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to various domains, many of which appear to be part of a link farm designed to host malicious files. The heuristic 'PDF_SEO_LINK_FARM' indicates a high volume of such links, suggesting a coordinated effort to distribute malware. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea that the document is intended to trick users into downloading content. 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://mightypharaoh.com/uploads/1/3/0/7/130776836/130776836.html#bully+obb+file+for+android
    • http://35dollar-tickets.com/uploads/1/3/1/3/131397987/3fa3ef.pdf
    • http://bigtimedj.com/uploads/1/3/0/2/130273623/rewegimawoka.pdf
    • http://johnmaanumod.com/uploads/1/3/0/6/130605176/kidek.pdf
    • http://libertyhouseinteriors.com/uploads/1/3/1/4/131408224/pepuvafutalo.pdf
    • http://ampzsolutions.com/uploads/1/3/1/4/131407138/xegejob.pdf
    • http://verticy.com/uploads/1/3/0/3/130313657/bulizakewadaxema.pdf
    • http://aria-boutique.com/uploads/1/3/1/6/131606347/wexeberumufiji.pdf
    • http://summitsn.com/uploads/1/3/0/3/130313345/zenolipibevu.pdf
    • http://huayuangroup.net/uploads/1/3/1/8/131872138/jekogunetagugumirov.pdf
    • http://kccannabizconexpo.org/uploads/1/3/0/6/130621838/9457628.pdf
    • http://grantspreneur.org/uploads/1/3/0/6/130604871/vukiratugafujamonuwo.pdf
    • http://imperiallaundryservices.com/uploads/1/3/0/3/130323181/7fd1de7d2a488.pdf
    • http://mtmotorboatin.com/uploads/1/3/0/5/130544072/wiwar_vexobol_jobaxakizal.pdf
    • http://kregnichols.com/uploads/1/3/1/6/131637719/863c703db252.pdf
    • http://brownselectricalservices.com/uploads/1/3/0/2/130272976/0cf5303.pdf
    • http://moorebirthday.com/uploads/1/3/0/6/130639590/narevu.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_off00006ad2.bin
eb632ea55a12ca418e68671f0615825e5707167d968396c08973ac70602ebf91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD2 10492 bytes

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