Malicious PDF — malware analysis report

Static analysis result for SHA-256 969508db292104ae…

MALICIOUS

PDF

60.9 KB Created: 2021-09-16 09:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: ceceb1a2faf0db16132b4805207d5990 SHA-1: d9f7e03a8530f01885a90e50a0e4a1a060ac0c1f SHA-256: 969508db292104aefb7f55634ca6c54c08a45646e94c151fa7dbd1ceda925517
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, including a specific ClamAV detection for a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier also indicated a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6228

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
  • 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 http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16137451ae661c---zafegofido.pdf In PDF document text
    • https://buffinvestment.com/upload/ckfinder/files/kezowuduxifadutereligojas.pdfIn PDF document text
    • http://movitecnic.com/ressource/site-image/files/32829975961.pdfIn PDF document text
    • http://tbff-bygg.se/img/files/17434162486.pdfIn PDF document text
    • http://www.bandungmesin.com/file/salediniz.pdfIn PDF document text
    • http://netcentricnj.com/ckfinder/userfiles/files/23788366509.pdfIn PDF document text
    • http://cephedanismani.com/images/pages/file/73006895616.pdfIn PDF document text
    • https://bloomeng.com/uploads/famusesir.pdfIn PDF document text
    • http://candleelectricals.com/uploaded_files/userfiles/files/11571354634.pdfIn PDF document text
    • https://cafesca.org/ckfinder/userfiles/files/6606831216.pdfIn PDF document text
    • https://ww150006.linebot.net/upfile/files/20210912075505.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/202199034176156.pdfIn PDF document text
    • http://baovethanglongmb.com/upload/files/53324261987.pdfIn PDF document text
    • https://muacash.com/webroot/img/files/ranewolew.pdfIn PDF document text
    • http://eyela.kr/uploadfile/fckeditor/file/pemuvepogojipoxonawavavir.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/161396bae6dfc1---lozafeseruxarirepeze.pdfIn PDF document text
    • http://ngocminhcnc.com/demo_thietbimay_24_7/upload/files/2718133930.pdfIn PDF document text
    • https://kurek-rowery.pl/user_pict/file/wawonarobalivirim.pdfIn PDF document text
    • http://omnoiptv.com/outscapes/admin/ckeditor/uploads/ck/files/52769816535.pdfIn PDF document text
    • http://lpxs168.com/filespath/files/20210914160230.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140da174f678---xojexifo.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/ec92f0f6e923099a44948a80a4048a25/76513439858.pdfIn PDF document text
    • http://skoleniridicu-online.eu/ckfinder/userfiles/files/pegukuwivinos.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/53463754128.pdfIn PDF document text
    • https://giritrademark.com/content_files/files/16131399595.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/79020012753.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=geometry+dash+2.5PDF link annotation

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