Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01f53aec199e1fe…

MALICIOUS

PDF

62.3 KB Created: 2021-09-07 11:34:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: b2af0eed301b31f3639875a0c047afbc SHA-1: 0e239c5d81b2dead78b2b87561742e4eed25bc47 SHA-256: f01f53aec199e1fee4355f1118bafc6ab02f806578cac2f3c48d019fbd8bc85d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs pointing to compromised CMS upload directories, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the structure and URL patterns are consistent with malicious PDF lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7892

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 http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1610da432d562e---67985438364.pdf In PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/l4aikbig7hmoj1dkolqc54vm0t/39492257813.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/xofugaperovajoderax.pdfIn PDF document text
    • http://nm-union.ru/ckfinder/userfiles/files/7892147375.pdfIn PDF document text
    • https://thinkhigh-tech.com/d/files/sizudafogoviwizer.pdfIn PDF document text
    • http://hasici-pristroje-eshop.cz/files/file/siferumodamigosas.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/71e1f39f99a3c6996ab8ebf8d20d1094/jerifulezu.pdfIn PDF document text
    • http://irinabailey.com/upload/files/kagagolizaterutadefogobo.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/c05d428af55494652df937b08a3170cc/verukapupafuku.pdfIn PDF document text
    • http://nickels.design/ckfinder/userfiles/files/vavevikapurid.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8d057d4fe---jorod.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/s24uvkdutu85gvso7rihst273f/rovon.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/175ce2ed67b657de6b36a7caf7fc70d0/34293455048.pdfIn PDF document text
    • http://stark-tools.ru/images/uploaded/xepabatagarinakeresoxa.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/9e5a9c6fd2c48f37912d553de00dd076/mometoje.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/c4420ec89179103a126156419c1edae2/xenadenogezimemiwafire.pdfIn PDF document text
    • http://kuppersbusch-center.ru/uploads/files/fadejiwovowitok.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce25f5463c---35648795431.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/6290ad017449d28bc9a18a308d6e617b/mokojiwomuwafawuzi.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/b07g31ei91l9aa57u778073k13/29993637810.pdfIn PDF document text
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/vetufogomodika.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=icse+class+10+maths+textbook+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD558 11048 bytes
SHA-256: dcde4b02c333ae41dc7c4c634f84e0a0384a8ef78669be3cd75b4d1f7b7616eb

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