Malicious PDF — malware analysis report

Static analysis result for SHA-256 6efeebb46c95ed85…

MALICIOUS

PDF

69.6 KB Created: 2021-09-29 03:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: f17ee60e08ec18524f8a830d0ff79a77 SHA-1: 94c02f6e8a361402beec15668f99261dd3cc88a5 SHA-256: 6efeebb46c95ed85ff8a8353d4be6afef5565730dcf3d12b0ad803b54fa39eae
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be part of a link farm. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggests this is an SEO manipulation tactic. While no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence indicate malicious intent, likely to distribute further malicious content or for SEO abuse.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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://batikatravels.com/userfiles/file/sapopesomeg.pdf In PDF document text
    • http://cross-winds.in/upload/contents/images/images/98360442605.pdfIn PDF document text
    • http://daehwa.info/uploaded/file/tevadowora.pdfIn PDF document text
    • http://studiotecnicomartani.eu/userfiles/files/2764744055.pdfIn PDF document text
    • https://www.jdconstinc.com/ckfinder/userfiles/files/12857623286.pdfIn PDF document text
    • https://serpavenger.com/ckfinder/userfiles/files/nogufex.pdfIn PDF document text
    • https://pemaboutiquehotel.com/assets/userfiles/files/xasilu.pdfIn PDF document text
    • https://uslugiinzynierskie.com/eurostyl/photos/file/63757248798.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/73405930459.pdfIn PDF document text
    • https://cicasoftavukatwebsitesi.demowebsiteleri.com/upload/files/33650512691.pdfIn PDF document text
    • https://seeyounow.net/userfiles/file/saviwufutadi.pdfIn PDF document text
    • https://ecohort.com/userfiles/files/49404864305.pdfIn PDF document text
    • http://japan-railpass.info/images/blog/file/kizakukin.pdfIn PDF document text
    • http://abwrva.com/uploads/files/54685827584.pdfIn PDF document text
    • https://goodline.by/userfiles/file/97410018330.pdfIn PDF document text
    • http://www.dr.schure.net/ckfinder/userfiles/files/gidurigadezezepagib.pdfIn PDF document text
    • http://colokit.thienlonggroup.com/Images_upload/files/kekejaguki.pdfIn PDF document text
    • https://pastravariaizvoarelebratiei.ro/images/file/dafadegiz.pdfIn PDF document text
    • https://cncostruzioni.com/userfiles/file/93600590773.pdfIn PDF document text
    • http://salondebellezaanamariaromero.es/ckfinder/userfiles/files/17792518681.pdfIn PDF document text
    • https://patidarpalanpur.com/web/k/main_admin/ckfinder/userfiles/files/lowikufikukegu.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/bc49aa10296e7638cfe761a6786c882b/mejejedajinirexekizibo.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/lunebigetufivizire.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=window+loader+for+windows+7+ultimate+64+bit+free+downloadPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE77 11128 bytes
SHA-256: 6b23774267c5cfe5cebdf25c6f5c3b42062dcecd9202f96c966b027830b67a08
font_01_sfnt_off0000c890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC890 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A2 15796 bytes
SHA-256: e2f65e85e0ba49f2c607715bde4e6af94cffb4bf136dda2560665607bb184d49

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