Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bb60096d3b26cec…

MALICIOUS

PDF

63.6 KB Created: 2021-05-10 09:01:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea663019a38bb8e0f16cdb05c827d276 SHA-1: a8f78cf9ca9143a3b65591e1a37d8b5620c3ea93 SHA-256: 0bb60096d3b26cec5eee4ab85454c6a620152b056408d10feb96b843ade9a8a4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to compromised WordPress installations or disposable hosting, indicating a likely phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample, but the extensive use of link farms suggests an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8600

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086d45d32775---17264029189.pdf
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/a223c1b6a6ac14f7bb39b573d973b98d/dorijid.pdf
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/ff6a358ae0b065f4a07943c2012e6763/56702275458.pdf
    • http://backupcenters.com/userfiles/file/muketexelakogapinonapade.pdf
    • http://meble-tk.pl/userfiles/file/jimosonorewoz.pdf
    • http://altinay-law.com/images/file/wakufifelazuwefu.pdf
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16089954d4a5da---64535726989.pdf
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/kucleb6ktvf9fn9729ml0ns6mo/kanedumodabivesomoj.pdf
    • http://budohurtsa.pl/userfiles/file/rebinizaw.pdf
    • https://amrapalispot.com/userfiles/file/fifukepatubobuf.pdf
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f38a6eab92---noparimofegevabovo.pdf
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/hnnrfardjcajmjmjrlip1if42o/98380593824.pdf
    • https://alllegaltask.com/wp-content/plugins/super-forms/uploads/php/files/kjmk0v0j7ffnmiss2aiop8ht53/kolusupitanidovewufe.pdf
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/77f1af32e85cc521053e68c4c30a6b21/41183830902.pdf
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/co6rftgq3tq7rqju4bmgef3sk7/pajogapujixotipe.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a3529c1f92---63570656763.pdf
    • https://apoiotelecom.com/imagens/img_fckeditor/file/vifakidulodarumelu.pdf
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608c27a1c1e48---41134404077.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=edi+999+companion+guide
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd14.bin
023e1218d65651bdced01fa1fa38f6f708eb43243c75269a7460e2424331fb77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD14 5000 bytes

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