Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ffd7a4b47799a4e…

MALICIOUS

PDF

44.3 KB Created: 2021-09-26 21:50:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e22c923300162f7ff1c39bc7a31a1999 SHA-1: cdd906e288ebae2bc4296f8c2b05c65e9689f4b3 SHA-256: 7ffd7a4b47799a4e30c2cc21dc77446995ac1c5503128e972fe8df575be89f42
94 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. Static analysis revealed it functions as a link farm, containing numerous external URIs pointing to disposable hosting domains. One such URI, 'https://allytemp.ru/uplcv?utm_term=cellulare+samsung+galaxy+s4+prezzo', suggests a lure for phishing or scamming users by offering a fake product deal.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4839

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=cellulare+samsung+galaxy+s4+prezzo PDF link annotation
    • http://cokhilegia.com/upload/files/99884532247.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16133b14885db1---fotezojepuvuv.pdfIn PDF document text
    • https://tinhhoaxanh.vn/userfiles/file/kezoxipom.pdfIn PDF document text
    • http://ohappy.org/userData/board/file/16454699785.pdfIn PDF document text
    • https://il-gusto.com/images/file/70106435345.pdfIn PDF document text
    • http://hasomedia.com/userfiles/file/wefiwejexumunegefifo.pdfIn PDF document text
    • http://gaushalango.com/uploaded_files/userfiles/files/27447689406.pdfIn PDF document text
    • https://nhaccugiare24h.com/uploads/userfiles/file/bupeviludazi.pdfIn PDF document text
    • http://www.vljainandco.com/userfiles/files/batajidipanug.pdfIn PDF document text
    • http://getsolarnj.com/userfiles/file/nigub.pdfIn PDF document text
    • http://fitviewer.info/files/file/83700936767.pdfIn PDF document text
    • http://kaymccarthy.com/immagini/file/59841724423.pdfIn PDF document text
    • http://bhhangkhong.com/upload/images/files/25316080397.pdfIn PDF document text
    • https://kubermatkaplay.com/ckfinder/userfiles/files/78478218800.pdfIn PDF document text
    • https://dunakanyarfesto.hu/ckfinder/userfiles/files/sosawonoroteroxovutekas.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc9f8952d9---36700756470.pdfIn PDF document text
    • http://ombs.ru/uploads/files/koledatunutamuniteparaze.pdfIn PDF document text
    • https://lixtech.com.tw/ckfinder/ckfiles/files/13438841193.pdfIn PDF document text
    • https://www.vignolaweb.it/ckfinder/userfiles/files/zizonavuxubelur.pdfIn PDF document text
    • http://simkoongschool.com/uploads/editer/files/rojorefetamaranotukuve.pdfIn PDF document text
    • http://aerotherminsulation.com/userfiles/file/debajemalik.pdfIn PDF document text
    • https://pracowniatechart.pl/fckpliki/file/83011898823.pdfIn PDF document text
    • http://cyc.cz/pictures/clanky/files/92062445348.pdfIn PDF document text
    • https://thehouseconcert.com/ckfinder/userfiles/files/49278783741.pdfIn PDF document text
    • https://bimstudioinc.com/media/files/21983267978.pdfIn PDF document text