Malicious PDF — malware analysis report

Static analysis result for SHA-256 7808aec4a8576908…

MALICIOUS

PDF

56.6 KB Created: 2021-09-05 03:45:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d22ee27abe4a3a1c1c4efe8c48e450f0 SHA-1: 421ca008fc7e8c96e101b0e28ee73fd541a84f01 SHA-256: 7808aec4a857690853afc49125cbe25fbe59093933f9a815b04b875e6b944abc
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains numerous embedded URIs, many of which point to PDF files hosted on compromised CMS platforms, suggesting a link farm designed to lure users to malicious content. The presence of multiple PDF_URI heuristics and the ClamAV detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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
  • 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.
  • 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://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160975e28f2861---xalubujegagudopo.pdf In PDF document text
    • http://zhouzhuank.com/v15/Upload/file/202172181223636.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/vowawefofukugararo.pdfIn PDF document text
    • http://klefmarken.se/upload/file/36382422936.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/n6s83tsjv2e0q4if2vecrrhr0c/50139003700.pdfIn PDF document text
    • http://avtokit116.ru/!upload/files/50046795557.pdfIn PDF document text
    • http://mmprogetti.it/userfiles/files/woxatajinegulukijenefak.pdfIn PDF document text
    • http://discus-rus.ru/upl/file/97839765257.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/1336100805.pdfIn PDF document text
    • http://140.121.125.49/ckfinder/userfiles/files/20210814_071318.pdfPDF link annotation
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/250475c2c0eec4d3b763fb1599bcac56/5383621261.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc8a01b8e2---17441020757.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f36f55d7f0---fekinimototigemovikeja.pdfIn PDF document text
    • http://brooklinehs1964.com/clients/6/6a/6a3559cec3eb17f551da2d864c8c85ab/File/janubexagafapofupasofarax.pdfIn PDF document text
    • https://lemonsport.sk/upload/file/dozilokeluluxumubobavag.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/0kiofshco5e9sege12kps0f77v/napawepekatowuduxokazud.pdfIn PDF document text
    • http://skkl.cn/filespath/files/20210826011732.pdfIn PDF document text
    • http://mijn-nederland.nl/userfiles/file/62531452554.pdfIn PDF document text
    • http://cwesp.biz/upload/file/kupijuxufomubivogijeri.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f744a003b85---43772715419.pdfIn PDF document text
    • http://bienbao.net/uploads/files/lakiloxozosevo.pdfIn PDF document text
    • http://villaelen.it/userfiles/files/92973301742.pdfIn PDF document text
    • http://biosystech.com/pdsFck/file/kidanemibozan.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607801580234e---judumogejipuk.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=convert+pdf+to+ppt+free+online+without+emailPDF link annotation

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