Malicious PDF — malware analysis report

Static analysis result for SHA-256 b253bd770d404396…

MALICIOUS

PDF

72.1 KB Created: 2021-09-19 00:37:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: 92d91dbf2f6cd614ccf8e34abc7dd354 SHA-1: ae247e503e23ff2cbcfee67798b41b3512bcf679 SHA-256: b253bd770d404396935de1d38cdbcc45491e600c28e86edccb443f2856a49d8d
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a phishing lure. It contains numerous external URIs, including one pointing to a raw IP address, suggesting an attempt to redirect the user to malicious content. The PDF structure and embedded links indicate a link farm designed to obscure the final destination, a common tactic in phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6613

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://gcoekmr.org/cukashmir/User_Files/imagefile/vejobaxujowusupekura.pdf In PDF document text
    • https://jordanadams.com/ckfinder/userfiles/files/mugeverubipiwuwexofoj.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/69221353907.pdfIn PDF document text
    • http://skonasystems.com/userfiles/file/27218694673.pdfIn PDF document text
    • http://geo-equipe.it/userfiles/files/fevutobizul.pdfIn PDF document text
    • https://alirezamirmohammadi.com/images/upload/files/28880584018.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16141ba628f870---dogofeleko.pdfIn PDF document text
    • https://chogmai.org/ckfinder/userfiles/files/65414574048.pdfIn PDF document text
    • http://telek-trans.hu/editor_up/jepolimoluwewamifuwum.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/wugixakukunovebokiku.pdfPDF link annotation
    • http://tmkb.org.tr/ckfinder/userfiles/files/42751578042.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed6ce7d170---mikatizomakotivibebelesan.pdfIn PDF document text
    • http://ymjgolf.com/file_media/file_image/file/lepizaserajogasew.pdfIn PDF document text
    • https://invision.buzyhub.com/files/91524031885.pdfIn PDF document text
    • http://onsijsselstein.nl/userfiles/files/rubotodorepi.pdfIn PDF document text
    • https://activsport.ro/userfiles/file/zeponajapaladazizajibife.pdfIn PDF document text
    • http://coffee33.ru/archive/file/27138265085.pdfIn PDF document text
    • http://kbchina.de/upload/zukexemew.pdfIn PDF document text
    • https://keongracun.org/contents/files/gogiponifutasevututiwa.pdfIn PDF document text
    • http://fairfresh.net/assets/admin/ckeditorimage/files/21080036005.pdfIn PDF document text
    • http://sake-tori.com/images/library/File/bulukubesuxowululop.pdfIn PDF document text
    • http://iehyun.com/editorupload/file/gawelibotuvimibavomi.pdfIn PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/91229308129.pdfIn PDF document text
    • http://davcpundri.com/css/file/rudixewijiwirikevugosokuv.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=is+google+play+music+free+on+androidPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB91 11028 bytes
SHA-256: 010d3ab45d396adc0cd10239df152c50509929de8c6c72c14ef9d5cb9414673d

Open this report in the interactive analyzer, or submit your own file for analysis.