Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a537dfbd878acd…

MALICIOUS

PDF

72.0 KB Created: 2021-09-16 15:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: a0249f025d7580d17318168cba372a53 SHA-1: d5760d87f3bc37ba4b7d28e5effde723d816de00 SHA-256: a4a537dfbd878acde213ec2fad5b57af59171b7c16a6930224ac00e177e71e05
124 Risk Score

Malware Insights

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

The file is a PDF that contains numerous embedded URLs, many of which point to compromised websites or disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. The presence of 'utm_term' parameters in some URLs indicates a potential SEO poisoning or spam campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4660

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 https://queure.ru/uplcv?utm_term=cell+phone+processors+ranked PDF link annotation
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/c76b1b3d72c97cd750c823deecf486ed/33963302825.pdfIn PDF document text
    • https://mimpishiosatu.com/contents/files/tiruduvo.pdfIn PDF document text
    • http://qhchemicalsfeed.com/upload/files/74870124316.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021090215524441.pdfIn PDF document text
    • https://srmhomes.com/images/bulk_images/files/damikitanogoxododo.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4fb84dfcb---55123507506.pdfIn PDF document text
    • http://hmondo.com/userData/board/file/kulogotaf.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/99392016117.pdfIn PDF document text
    • http://phutungotodungha.com/img/files/16445687831.pdfIn PDF document text
    • http://branonperformance.com/ckfinder/userfiles/files/bobujadatopedodegoxonubew.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/fozajanasefajiwo.pdfIn PDF document text
    • https://libertyrealestate.in/ckfinder/userfiles/files/1035068636.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16137030d9f3f3---70791682698.pdfIn PDF document text
    • http://abwlargo.com/uploads/files/84483618052.pdfIn PDF document text
    • https://sagarexpress.com/userfiles/file/58902529645.pdfIn PDF document text
    • http://bacsionline.net/userfiles/file/33133537055.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140fe95f25d3---1163721260.pdfIn PDF document text
    • http://baugeraeteverleih.de/benutzerdateien/46995650498.pdfIn PDF document text
    • http://haustechnik-hagenauer.at/56297269175.pdfIn PDF document text
    • http://sujitonweb.com/userfiles/files/benivopagudedadaza.pdfIn PDF document text
    • http://avtokapriz42.ru/userfiles/file/dagubeg.pdfIn PDF document text
    • http://cuboni.com/uploadfile/hong202109052345484596.pdfIn PDF document text
    • http://binhchuachay.info/Images_upload/files/roxiwujixozaxap.pdfIn PDF document text
    • https://booking-news.hkdnracing.com/webroot/editor-uploads/files/vuvimupumavos.pdfIn PDF document text
    • https://graphicart.ro/fckfiles/file/66183983213.pdfIn PDF document text
    • https://ihappywash.com/uploads/files/202109041043301059.pdfIn PDF document text

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