Malicious PDF — malware analysis report

Static analysis result for SHA-256 d965ce466115bd98…

MALICIOUS

PDF

69.3 KB Created: 2021-09-13 10:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a4bcc5f3dd4a804be7a636adfea5a254 SHA-1: 6aed942eb56f652480d0a1f32ca84db4ad51a617 SHA-256: d965ce466115bd98fcf49dff9bdd4796213d73131f9c5c098e72351b0b2ef414
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous embedded URLs pointing to disposable hosting, indicating a link farm designed to distribute malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3555

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://allytemp.ru/uplcv?utm_term=map+navigation+apk
    • https://nhahangbienhaitien.com/uploads/files/budupoduwogoseni.pdf
    • https://juvelyrikoscentras.lt/Files/file/tenesudezom.pdf
    • https://scalping.ir/data/files/file/roragevafotosevedosojuviz.pdf
    • http://winfielddeli.com/ckfinder/userfiles/files/vigalulomive.pdf
    • https://alwillislifecenter.org/ckfinder/userfiles/files/85360447503.pdf
    • https://hediyelikhanem.com/calisma2/files/uploads/jogutakesavesu.pdf
    • http://mariondhuique-mayer.com/data/file/79237902055.pdf
    • http://tuvantindat.com/uploads/2021-09-13/images/files/77440954196.pdf
    • http://kbchina.de/upload/43103315560.pdf
    • http://bkdesign.ee/userfiles/file/50295038133.pdf
    • http://neza.cz/UserFiles/File/potadudifimebetofowuvut.pdf
    • http://myxroad.net/upload/userfiles/file///sopevesofumekilatunewoki.pdf
    • http://kco.su/userfiles/file/14914779154.pdf
    • http://aalzkj.love-mrt.com/upload/files/miveb.pdf
    • http://npi-management.org/ressource/site-image/files/28620638312.pdf
    • http://universalthailand.com/images/uploads/ckfinder/files/35674101149.pdf
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/33315298756.pdf
    • https://themalc.org/files/file/nagitiro.pdf
    • http://salwex.hu/file/xizabonetodof.pdf
    • http://indemo.pl/Image/files/fenewikowajapitel.pdf
    • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/71175796950.pdf
    • http://uralteplostroy.ru/content/file/kafex.pdf
    • https://ostrichtours.com/ckfinder/userfiles/files/sejuloxiwowegulaxapata.pdf
    • https://aquamedicasatumare.ro/ckfinder/userfiles/files/67395642208.pdf
    • http://fotografieindex.nl/images/uploads/mifopitemivi.pdf
    • http://irodori.kir.jp/files/file/38518158896.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c39b.bin
a598a99a56aae8971c26da1b22e8864c679d9a25e99f41fa0c109c3a060053b4
pdf-font-stream PDF embedded font (sfnt) at offset 0xC39B 10132 bytes
font_01_sfnt_off0000da60.bin
530b667c02f811c4b9bb1a8afe1de8d02cc3c6f90edfb96d7176d31005e38985
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA60 16896 bytes