Malicious PDF — malware analysis report

Static analysis result for SHA-256 c57655fdc4863fc9…

MALICIOUS

PDF

35.3 KB Created: 2020-04-06 15:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3c627e75b437498e75a4420124032ea3 SHA-1: 17af38c83984b6c526ea709a506b0abfce8e6176 SHA-256: c57655fdc4863fc990e6a0c9fa476cab0d0d56d83465ec5c65c414183f5b56c1
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious content. The document body, though heavily obfuscated, contains a reference to 'La casa de los dibujos capitulo 3 temporada 2' and the wkhtmltopdf generator, suggesting a lure. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with the highest priority IOC being the first identified external URI.

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://referral360network.com/uploads/1/3/0/4/130488832/130488832.html#la+casa+de+los+dibujos+capitulo+3+temporada+2
    • http://theinvestmentsalesgroup.com/uploads/1/3/0/6/130604101/mebilukofezaw.pdf
    • http://sportsbus.com/uploads/1/3/0/6/130639886/vevutuliloguz.pdf
    • http://luxcheveux.co/uploads/1/3/0/2/130272482/6ec5c15354.pdf
    • http://mail.chardun.ch/uploads/1/3/0/6/130604768/juguvidi.pdf
    • http://adan.pt/uploads/1/3/1/4/131437427/toguvu_vimidinuxa.pdf
    • http://sincityfindsvintagejewels.com/uploads/1/3/0/8/130813852/809044.pdf
    • http://radiodynamo.fi/uploads/1/3/1/4/131438353/bc499c.pdf
    • http://psintra.com/uploads/1/3/0/6/130620859/a871dba9e45e.pdf
    • http://sckatelynham.com/uploads/1/3/0/7/130776819/xalujuvaxoda_levaderuwomu_tuwapujaredewu_tagonogu.pdf
    • http://mastersvineyard.org/uploads/1/3/0/6/130621406/mibixepap.pdf
    • http://nestingnet.com/uploads/1/3/0/7/130775639/dudaviwuzepiso.pdf
    • http://districtmatl.com/uploads/1/3/1/4/131438345/3161215.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_off00005cf2.bin
6918374ee995017aeeeb78cabe70fbb5ebd4c3043a9a94796160db03d84ef2f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF2 9316 bytes

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