Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e5071c4f49c0266…

MALICIOUS

PDF

48.0 KB Created: 2021-07-10 06:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: eee09eea94ed6c4f5b8067aed8b52e16 SHA-1: 21839b08111e1cf62810335bfb662c3b340c1180 SHA-256: 5e5071c4f49c026641732b898d5ec5f616abd84c05b5abb6b660ad70b6426930
154 Risk Score

Malware Insights

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

The PDF document contains a link farm pointing to multiple compromised CMS upload directories and disposable hosting sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is unreadable due to truncation and encoding, but the presence of numerous external links and the heuristic firings are sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7126

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16083a989865b1---46784095032.pdf In PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160850dcdc5663---58354349993.pdfIn PDF document text
    • http://fly.no1-yes.com/userfiles/file/gulapalomopuzejewufutoja.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861b58b3d0d---nugixumamimenezenoj.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021052307041373499.pdfIn PDF document text
    • http://compufoxmail.com/userfiles/file/nozaziwofa.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/6dqta07n457npj89vr6p9u3nt2/lopexibapamosenolebofas.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ad65639401e---wawoduxatameluwometutijaw.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/g8bajiqfqvd6te2krmdrhhcng3/9543987515.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/c2aca4237bb72dd516d0f5027f7b914e/56167538492.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/66h884rsv3omft9mt0pe9mjhgm/nanokavopumasu.pdfIn PDF document text
    • https://malikcolsys.com/userfiles/files/62342603411.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4345e15e9---nolaku.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/d3ebd516d2485ec6cdf1fc27a2c371a4/xivunofa.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160d2c3eb8e93e---16363062550.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/c5pp8agt76ea67h8e9ld3rf6a0/37758076624.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16084ec3953497---wavizedep.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfcc47b433---mawanopafawejuxizi.pdfIn PDF document text
    • http://ipublicity.cz/data/file/ludegipazum.pdfIn PDF document text
    • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/6f4052d04285b36475b609b53620343a/77216440185.pdfIn PDF document text
    • https://texigo.tw/upfile/files/2021/06/29/netipubokigoxekamekog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=the+running+time+of+insertion+sort+isPDF link annotation

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