Malicious PDF — malware analysis report

Static analysis result for SHA-256 272392a1ee158ef5…

MALICIOUS

PDF

89.3 KB Created: 2021-07-20 05:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: c42c1a4d481df96c0b25ec2b4cfb7e5b SHA-1: 4a70d30d771cabc95234610f8c077620e58758e7 SHA-256: 272392a1ee158ef58fea847942ce6af1ce91de2a36cdc42b5a6735b062a32c7c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL analysis point to a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/16072f275472bc---majogewowujukasug.pdf In PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/01cc89157dcbc791f72b8ba21a3117dd/duvolupokexato.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/1jo2i3f4hn5vcncd51ud114m80/42132984225.pdfIn PDF document text
    • https://kis-u.com/page_data/file/20210529022626.pdfIn PDF document text
    • http://hornets88.com/clients/56662/File/63264062565.pdfIn PDF document text
    • http://lamachine.nl/userfiles/file/gepopenikuj.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbdc6b9a89---48791600686.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609456d09ded8---jipep.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081e4c214834---fazififidonowelutiz.pdfIn PDF document text
    • http://azizolace.cz/images/file/pinisulurixupodafaju.pdfIn PDF document text
    • http://taxilitomerice.cz/ckfinder/userfiles/files/46036803680.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/mefigegajewetimonu.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/rezulajirifopalaxororaw.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/13800936614.pdfIn PDF document text
    • http://centrumbiznesurawicz.pl/userfiles/file/nulafukazeguxe.pdfIn PDF document text
    • http://windowsplusllc.com/ckfinder/userfiles/files/mudixaxasan.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/feqorptvpbhcoo69dnptlc21sj/bamojub.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/s8d4k6ecgtaacheovehfer3psd/wurisur.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/71397356319.pdfIn PDF document text
    • http://paradisetourkorea.com/FileData/ckfinder/files/20210630_4F576342C3BF3140.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c1703ef2e07---90138589437.pdfIn PDF document text
    • http://hhcreunion.com/clients/4/43/43f38dc94a4d709fe78decf5bd9d7370/File/28693082262.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0591d1e3c---tovilorulejem.pdfIn PDF document text
    • https://optimustelecoms.com/ckfinder/userfiles/files/surafifovogumesigonegexo.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/36901289841.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=all+weather+roofline+companies+housePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e32d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32D 16408 bytes
SHA-256: 34fb353fd37108616450ec06219e0e3ae0388700c010a627217ffa85a3490cef
font_01_sfnt_off0000f97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97C 16896 bytes
SHA-256: 4cf11acc1ef912c92a2e5c0a8d182258cc6ae6500f462361f9b2d4339f66d813
font_02_sfnt_off000125f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125F4 10912 bytes
SHA-256: f9dec52f89c86435d43378f83f8757b50631af84443fd3da36c29836ab6d212b
font_03_sfnt_off00013f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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