Malicious PDF — malware analysis report

Static analysis result for SHA-256 c95b740917f2b987…

MALICIOUS

PDF

39.8 KB Created: 2020-03-20 14:20:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 735480123b8ad4c6062a264ddd693656 SHA-1: d675d13d1c71b8dcf61542a70a9cf18433ab6711 SHA-256: c95b740917f2b9875801b8b712fc0ebd72b31823db3e2d510b5c9c5b2ef5ef53
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 to other PDF files hosted across various domains. This behavior is indicative of a link farm or a distribution mechanism for malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this mass linking of external PDFs. No scripts were extracted, limiting the ability to determine a more specific attack pattern or family.

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://conversationsofchange.net/uploads/1/3/0/4/130483866/130483866.html#estudio+de+campo+visual+central+y+periferico+convencional
    • http://breathingzonetech.org/uploads/1/3/0/4/130483864/4307537.pdf
    • http://5starspamassage.com/uploads/1/3/0/8/130814642/natefagip-feradoki-zomujufuduribu-xomowurefimufa.pdf
    • http://www.speechanddebatecamps.com/uploads/1/3/0/4/130476013/wiviz.pdf
    • http://mail.educateachildinpakistan.org/uploads/1/3/0/5/130538840/pexumoboj_giroz_kasogirapoj_nenunemijejiv.pdf
    • http://boxclothingco.com/uploads/1/3/0/2/130291552/4690cd1.pdf
    • http://www.avytraining.com/uploads/1/3/0/8/130874497/nozulofazokisoso.pdf
    • http://childrenshospitalchildcarecentre.com/uploads/1/3/0/8/130874046/navure.pdf
    • http://headlinehighway.com/uploads/1/3/0/4/130476401/8673170.pdf
    • http://claypottsbuildingservices.net/uploads/1/3/0/6/130604678/f45cdf3ee8e.pdf
    • http://www.tasbbq.com.au/uploads/1/3/0/7/130776436/829360.pdf
    • http://www.invidpromo.de/uploads/1/3/0/6/130639042/digidosesorif.pdf
    • http://www.yeahbabyyarns.com/uploads/1/3/0/6/130621608/vewesomijilev.pdf
    • http://mtsarmusic.com/uploads/1/3/0/5/130589228/nisewutugajumax.pdf
    • http://stlouisbeermugs.com/uploads/1/3/0/6/130639423/raduj-darewakukelabu-jagaxasetivix-nulefipe.pdf
    • http://okiegear.net/uploads/1/3/0/5/130551898/belavodoliwa_beguvaviguxel_nevebozireboto.pdf
    • http://www.higherdimensionsministries.com/uploads/1/3/0/5/130551920/bixizi-pakidena-munukazefijobi.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_off000070e9.bin
57f7300604149338c54588427b59aa06e3fc499635c5730a42c5a1de88096ad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E9 8404 bytes

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