Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96cfc1080711c2e…

MALICIOUS

PDF

41.4 KB Authoring application: QPDF
MD5: cc6d5f7a62215a206406de1caf3fddb3 SHA-1: bdd206f01447eb3e00f6d5ffe58a5c52e4b92993 SHA-256: d96cfc1080711c2e1481ad5c1b35193f921bc447010536353afe584f6e1d05d5
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to suspicious domains, indicating a link farm for SEO manipulation or phishing. The primary heuristic firing, PDF_SEO_LINK_FARM, highlights the excessive external links, with the first URL being http://gumaporo.app3pinfo.online/uploads/2020/01/28/dbe39d2e49.pdf. The ML classifier and ClamAV detection further support the malicious nature of this PDF, classifying it as phishing and malware. The document body, though partially corrupted, contains text related to vaccine costs and embedded URLs, suggesting a lure to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://gumaporo.app3pinfo.online/uploads/2020/01/28/dbe39d2e49.pdf
    • https://jugajilir.weebly.com/uploads/1/3/0/4/130479350/9361710.pdf
    • http://hiinvitational.com/uploads/1/3/0/5/130541424/2393214.pdf
    • http://1551nbr.com/uploads/1/3/0/3/130323163/da60da2eb2e038.pdf
    • http://deborahdion.com/uploads/1/3/0/6/130605230/jidididareku.pdf
    • http://xavo.g-c-s.cc/uploads/2020/01/29/rusijag_rilapeliped_vimuzuwoje.pdf
    • http://kup.englishabakan.ru/uploads/2020/01/29/sanefak.pdf
    • http://njhsustainability.weebly.com/uploads/1/3/0/4/130489143/411dc9abc02f211.pdf
    • http://alicevonlindenau.com/uploads/1/3/0/4/130475932/82efb74a.pdf
    • http://lezidisev.mummys-gold.ru/uploads/2020/01/27/8846042.pdf
    • http://mshvita.com/uploads/1/3/0/6/130620796/sesuserifi-retoxovizanin-tubefaket.pdf
    • http://airmicrochip.com/uploads/1/3/0/5/130542922/kakibakijo.pdf
    • http://laising-swd.de/uploads/1/3/0/6/130621581/1995689.pdf
    • http://veb.sos34.ru/uploads/2020/01/29/savukojen_gogiraxu_bitijopunubemus_biluw.pdf
    • http://refugechurchva.org/uploads/1/3/0/5/130539718/sizoxoxujidadoxo.pdf
    • http://thefrogbunch.weebly.com/uploads/1/3/0/5/130543093/wogasezodab.pdf
    • https://jenunetewu.weebly.com/uploads/1/3/0/6/130604764/xesumizumemod.pdf
    • http://pnwveggiegirl.com/uploads/1/3/0/2/130271085/lijeboka_safogeza.pdf
    • http://temo.dcdinspecciones.com/uploads/2020/01/29/vuparegakixiwapagiz.pdf
    • http://michaelmccarthy.net/uploads/1/3/0/2/130289262/7794126.pdf
    • http://katherinegaulke.com/uploads/1/3/0/4/130436272/8ab526f4.pdf
    • http://star-nrg.com/uploads/1/3/0/5/130550953/puxadip_pegedasu.pdf
    • http://nupelicanparty.org/uploads/1/3/0/6/130621754/130621754.html#typhoid+vaccine+cost+in+india+2018

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016c2.bin
6203cdea6942c089ae448f1223683b841276720dd4fb64596cd4a50adaed0717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C2 8740 bytes

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