Malicious PDF — malware analysis report

Static analysis result for SHA-256 d520d1f979623840…

MALICIOUS

PDF

37.8 KB Created: 2020-04-03 14:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9a7428210745b59780002a0d0b23a1fd SHA-1: a85b39ba4c764efcf554a4ab5fb69e0ea936fd9b SHA-256: d520d1f9796238402b5c333f4f196fa0b79b14adfbd48a7b5608ba1f94e75bea
70 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body also contains urgency lures, such as 'account will be terminated' and 'action required within 24 hours', which are common social engineering tactics to prompt immediate user interaction. The primary IOC is the first external URI found, which is also present in the document body.

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://hernur.com/uploads/1/3/0/6/130621051/130621051.html#if+i+block+on+snapchat+will+they+know
    • http://inthetwenties.com/uploads/1/3/0/4/130476850/9959628.pdf
    • http://northpugetsound.net/uploads/1/3/0/2/130289722/getiwukab_parufoberita.pdf
    • http://eq3aruba.com/uploads/1/3/0/6/130622009/3186201.pdf
    • http://servicemailgan.services/uploads/1/3/0/5/130550688/nakifiwa.pdf
    • http://brotherssoap.com/uploads/1/3/0/9/130969959/wesabekutapovixejob.pdf
    • http://crabgrassma.com/uploads/1/3/0/4/130483204/paxemuwujoroped.pdf
    • http://capturedthat.com/uploads/1/3/0/4/130476564/277d77cbff5ad.pdf
    • http://ketafusion.net/uploads/1/3/0/4/130435891/malegorol.pdf
    • http://bistrous.com/uploads/1/3/1/3/131379699/55427.pdf
    • http://www.uxdiscover.com/uploads/1/3/0/8/130813054/kovutitoxu_selijik.pdf
    • http://uite-aici.com/uploads/1/3/0/2/130271017/8fa351355.pdf
    • http://wordsmartdesigns.com/uploads/1/3/0/6/130639413/zomunajolevivusuzilu.pdf
    • http://currierroofingcompany.com/uploads/1/3/1/1/131164472/6637601.pdf
    • http://sharonscouts.org/uploads/1/3/0/5/130590142/6885533.pdf
    • http://shaylynwhitephotography.com/uploads/1/3/0/7/130739445/22f5619742.pdf
    • http://thescurlockgroup-promo.com/uploads/1/3/1/3/131382828/2016164.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_off00006ba3.bin
19e7dcbba022b603ebfef326adfa0e4a4f37653b56821ca30bede258e7c4421f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA3 7796 bytes

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