Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4e3b93d5291b55f…

MALICIOUS

PDF

64.4 KB Created: 2020-03-26 06:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ffea3417c44f913a3d4f21c522fcf072 SHA-1: c330bd1e6c3eb84df212192700028a319f5dfa4c SHA-256: b4e3b93d5291b55f1b7cd62ae9f304cf3a75112b18fb2f71ac7b4ae81cccacda
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. This pattern is indicative of a link farm or SEO manipulation tactic. The document body contains garbled text and a formula, suggesting it's a lure. No scripts were extracted from this sample, limiting the ability to determine further malicious intent beyond link redirection.

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://block1949-asu.com/uploads/1/3/0/6/130639775/130639775.html#formula+para+calcular+viscosidad+cinematica
    • http://www.marusacarolinas.com/uploads/1/3/0/5/130588809/3b0d69e.pdf
    • http://varjufamily.com/uploads/1/3/0/4/130483903/fojopuxuwezer-zeleguziteped-wopofixa-tajagefuvop.pdf
    • http://www.myinklady.com/uploads/1/3/0/2/130273789/kaladasituzus-dajuzixagu-gosaguzoni-nutizoxefedoper.pdf
    • http://nxlevelgolf.com/uploads/1/3/0/7/130738890/3868837.pdf
    • http://astylemavenscloset.com/uploads/1/3/0/8/130874252/saduxinatati-tilaxo-jiniriwejejeli.pdf
    • http://marionminotti.org/uploads/1/3/0/5/130545382/3558662.pdf
    • http://webdisk.mark2inc.org/uploads/1/3/0/6/130604885/pureranibat_poguwevefaxo.pdf
    • http://capitalareaanesthia.com/uploads/1/3/0/9/130969679/pujejumakisiwa.pdf
    • http://becsandiego.com/uploads/1/3/0/7/130738666/845015.pdf
    • http://industry-b.com/uploads/1/3/0/6/130639600/gomolopezezineri.pdf
    • http://www.sweetpiecebakery.com/uploads/1/3/0/8/130874218/nosezameponogarenapa.pdf
    • http://www.angyslife.com/uploads/1/3/0/5/130538863/94d0970a266d31.pdf
    • http://hipaawebcasts.com/uploads/1/3/0/5/130550731/nakaju_lagewobederajaf_sefef_budekizagaraj.pdf
    • http://traumainformedleadership.com/uploads/1/3/1/3/131381316/231914.pdf
    • http://webdisk.beechwoodproductions.ca/uploads/1/3/0/6/130605490/50de7501a.pdf
    • http://academyofintegratedtherapies.com/uploads/1/3/0/4/130478566/dipomevexa.pdf
    • http://vanityfairvip.com/uploads/1/3/0/8/130813818/3496124.pdf
    • http://outsideinmassage.com/uploads/1/3/0/4/130436159/gidulelaxorepa.pdf
    • http://savelma.com/uploads/1/3/0/7/130740489/bejixivirepad-xomadevufiketor-tupubum-mogomegojemol.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009dc1.bin
41e364c1ea857945bca170711fa8a5ec06179aca20ec2d758cf18d6d6858ccc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC1 9860 bytes
font_01_sfnt_off0000c116.bin
3c2ed8bdc3112ada15b2189c9d5724a40ff234cb69f32bb46b52e188cf4f8254		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC116 4636 bytes
font_02_sfnt_off0000cece.bin
d0eed65f4ddeab6515752ab2c51e78c4b86cbfa31b0fe086017b9e8dd9caaacc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCECE 4280 bytes
font_03_sfnt_off0000dc6e.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6E 16036 bytes

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