Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef5ddba581d1aebf…

MALICIOUS

PDF

55.4 KB Created: 2021-09-23 07:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: fdbf99c2e0e3faa55950857a68d188d8 SHA-1: ce51d5781b8f80a9421f23287208ccbd16f34c1b SHA-256: ef5ddba581d1aebffda7b146fec536d2a5c67ee5a5672684016da992327cfb75
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable domains, suggesting a link farm or phishing lure. The PDF structure and embedded content indicate it is likely intended to redirect users to malicious websites, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7552

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 http://abwrva.com/uploads/files/95813694865.pdf In PDF document text
    • https://dukra.sk/editor_uploads/files/lalivivixiwutu.pdfIn PDF document text
    • http://www.scea.edu.mn/ckfinder/userfiles/files/9439361466.pdfIn PDF document text
    • http://xn--b1adcbbai1bezln.xn--p1ai/content/File/2309062302.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/62352995313.pdfIn PDF document text
    • http://babywagen24.de/userfiles/file/kobinakuwagekobovajodumer.pdfIn PDF document text
    • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/15330574224.pdfIn PDF document text
    • http://membranekeyboard.pl/_data/file/gigabokifewovisabajobaru.pdfIn PDF document text
    • https://omprintandpack.com/userfiles/file/tavujavukalowigijite.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145e345be631---xipivefazasujitujirebojed.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614b471fc2bcc---9682074220.pdfIn PDF document text
    • http://opsir.eu/files/file/56582825060.pdfIn PDF document text
    • http://rovitek.com/userfiles/file/dowegugi.pdfIn PDF document text
    • https://kolkataangikar.org/ckfinder/userfiles/files/49626025180.pdfIn PDF document text
    • https://marmetal.cevhertemizlik.com/userfiles/files/gonujixovukiwiwukufida.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/nudoji.pdfIn PDF document text
    • http://chunmianxian.com/upfolder/e/files/20210906070937.pdfIn PDF document text
    • http://cutyoursupport.com/userfiles/file/bivom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=bowmasters+unlimited+gems+and+coinsPDF link annotation

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