Malicious PDF — malware analysis report

Static analysis result for SHA-256 06265f0270fd53c3…

MALICIOUS

PDF

86.7 KB Created: 2021-09-13 15:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: de876b773afbfe3e330f50a13f9419f5 SHA-1: bdbca6faf9cfaf5fc726f6820c9a8eb62f33791b SHA-256: 06265f0270fd53c341844651c41671edb3ebb80195377801703cdb7e9421c8fd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • 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
  • 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 https://garglob.ru/uplcv?utm_term=multiple+accounts+app+android PDF link annotation
    • http://exima.kr/userData/board/file/doxidabuxasake.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135c94aef52d---88695800137.pdfIn PDF document text
    • https://www.luxboss.com/ckfinder/userfiles/files/kudadekisazuximube.pdfIn PDF document text
    • http://bladensburg.abwingsmd.com/uploads/files/lisabemivevogenuxadudazo.pdfIn PDF document text
    • https://cuisinescartier.ca/upload/editor/file/mamawadivoratodibazudise.pdfIn PDF document text
    • http://boatmonies.com/uploads/files/viboxumamulorib.pdfIn PDF document text
    • http://studiotecnicomancini.eu/userfiles/files/fedotirufipu.pdfIn PDF document text
    • http://njbeihang.com/uploadfile/file///2021091014172845.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed1a9c6d84---87785328394.pdfIn PDF document text
    • http://sinproval.it/userfiles/files/davupopujoxatukosemijuvok.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/8bdb617c6769b73852778e9504efc251/vomodol.pdfIn PDF document text
    • https://pasationtravellers.com/root/FCKeditor/file/29344411092.pdfIn PDF document text
    • http://spalovnachemolak.sk/userfiles/file/98148745122.pdfIn PDF document text
    • http://gazosilikatnn.ru/uploads/files/20854829756.pdfIn PDF document text
    • http://innotack.com/userfiles/files/1186663724.pdfIn PDF document text
    • http://teewer.mn/ckfinder/userfiles/files/xufejebejada.pdfIn PDF document text
    • http://xlpe.net/Images_upload/files/nemixuguritudoge.pdfIn PDF document text
    • http://schokoladenbrunnen.de/idata/42568454042.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16139a95a5b92a---rananakobem.pdfIn PDF document text
    • https://vialivonica.eu/userfiles/files/tabajopasaregapitefufitog.pdfIn PDF document text
    • https://maintogelonline.info/contents/files/56378324044.pdfIn PDF document text
    • https://westhigienia.hu/editor_up/sorotifevojij.pdfIn PDF document text
    • http://nuk-amro.de/userfiles/file/lajogiwujiwejese.pdfIn PDF document text
    • https://cuichi177.com/uploads/files/202109081918574894.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/3e1bae1bc6fabdb46c880a082a61e7d6/19759454049.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00F 10600 bytes
SHA-256: a76027c2536577e1990d01ac5e657fff4ce8cd7f85dd2626de3eec9990651c76
font_01_sfnt_off00010866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10866 17180 bytes
SHA-256: 62b9bad1d65607917435e43912b7f6dc319c4e1d37b50bf71c02438c69ddbf44
font_02_sfnt_off000134bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134BF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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