Malicious PDF — malware analysis report

Static analysis result for SHA-256 346998d8600c408d…

MALICIOUS

PDF

37.5 KB Created: 2020-04-10 11:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ff944f23bdc269e8ea6db819e5d7d7eb SHA-1: 72c35051c1d0df81a25904daa305184dd472c98c SHA-256: 346998d8600c408d677e1c863a8b3e186d4e7065d0ba830989f95f1f1c8fdea9
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains URLs that appear to be part of this link farm. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a link farm designed to lure users. The primary attack pattern involves social engineering through deceptive links.

Heuristics 3

  • 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.
  • 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://dtcapitaladvantage.com/uploads/1/3/0/4/130435688/130435688.html#libro+derecho+administrativo+1er+curso+pdf
    • http://seaspaorganics.com/uploads/1/3/0/7/130776401/f7ae5c6a7a.pdf
    • http://blurrygorilla.net/uploads/1/3/1/3/131398392/72257e1f46f91.pdf
    • http://remay.eu/uploads/1/3/1/3/131398148/kekipimiw.pdf
    • http://newenglandwoodworkingstudio.com/uploads/1/3/0/2/130287266/wituze-furisez-nofasewuke.pdf
    • http://digitalmusiciansmedia.com/uploads/1/3/1/3/131381904/9907965.pdf
    • http://float-con.com/uploads/1/3/0/5/130545011/1985bb6158a3eb.pdf
    • http://bloemisterijverwulgen.com/uploads/1/3/0/5/130589274/zotibe_tufoxepewi.pdf
    • http://englishtutorforyou.net/uploads/1/3/1/0/131070420/fulegovus_dajotulisimofe_jukiwav.pdf
    • http://vallecocodrilo.com/uploads/1/3/0/8/130814308/kutofipo_basemojoxon.pdf
    • http://vulnerablechildcarefoundation.org/uploads/1/3/1/4/131452917/802d9cf2cfb5a0.pdf
    • http://kimblevins.com/uploads/1/3/0/6/130620366/wivaratokobep.pdf
    • http://lapetite-ecole.com/uploads/1/3/1/4/131482996/4536431.pdf
    • http://burnett-farms.com/uploads/1/3/0/9/130969461/nebiwidu-xofesaka.pdf
    • http://freedommountainfestival.com/uploads/1/3/1/1/131164067/kibulumofimipepi.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_off0000687b.bin
081baf5167ecff6175994970af8c4f4ae5dd0afd321e7aa198e030134b07e25f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x687B 9116 bytes

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