Malicious PDF — malware analysis report

Static analysis result for SHA-256 5654b27a2dfe9d82…

MALICIOUS

PDF

35.7 KB Created: 2020-04-11 04:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b5ff858e582354cdebd1ed51543e002b SHA-1: 4d5ecddeb5dc24914b1a61d0efe45d084af24bac SHA-256: 5654b27a2dfe9d821cd39a2f877c9c5252d676801637d045153f91617de47796
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains numerous embedded links to external websites, a technique often used for SEO link farming or to redirect users to malicious content. The document body mentions 'Tube downloader free' and the presence of urgency lures suggests a phishing or scam attempt. The heuristic PDF_SEO_LINK_FARM firing indicates a large number of external links, many of which are likely malicious. The primary IOC is the first external URI found, which also contains the lure text.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://74-123-76-199.mgwnet.com/uploads/1/3/0/8/130813054/130813054.html#tube+downloader+free
    • http://blackflagfarm.com/uploads/1/3/0/4/130476798/momisavewexew_lanox_vipesoxakila_dolosamalofis.pdf
    • http://ithinkevents.com/uploads/1/3/0/4/130478009/refudalidodaxi.pdf
    • http://adamhilto900eportfolio.com/uploads/1/3/0/5/130545895/c6aa460371ab87d.pdf
    • http://transportica.io/uploads/1/3/1/0/131070560/02df1bfa.pdf
    • http://basicenv.com/uploads/1/3/0/8/130874523/2112074.pdf
    • http://dtessema.com/uploads/1/3/0/3/130323322/9146728.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bb9.bin
ac34713c7840eb48ac2494a7a8c3112d00fa183fae32143a215972b1c1e084cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB9 8880 bytes
font_01_sfnt_off00006c3c.bin
b22c52ea19433ae9103df90594ae7e310f64cc47dba0df7de9c5a31286f313e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3C 6908 bytes

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