Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef189eae0eb64295…

MALICIOUS

PDF

69.3 KB Created: 2021-09-25 06:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: de855e3596cc03f18cf157c1102cccd2 SHA-1: 396b8d11c8a94a5eb8ca287f121af3acf23f8398 SHA-256: ef189eae0eb64295d9848ef2d305ff4ab97dbf8a7320d6ae02d99a5967c9a05a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains a link farm with numerous URLs pointing to PDF files, suggesting a tactic to distribute malware or phish for credentials. The presence of a 'utm_term=dream+league+download+for+android' parameter in one URL indicates a lure for a popular game, likely to trick users into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://mylodge-naoshima.com/53315108090.pdf In PDF document text
    • http://epicridesnepal.com/files/98520950960.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/59255634570.pdfIn PDF document text
    • http://movietek.vn/hinh-anh/files/jejaboxeve.pdfIn PDF document text
    • http://azinsaghf.com/cache/fck_files/file/39673193796.pdfIn PDF document text
    • https://agatanorek.com/files/file/86523718731.pdfIn PDF document text
    • https://mpressivelabels.com.au/application/third_party/ckfinder/userfiles/files/12832825101.pdfIn PDF document text
    • http://nhactheducthammy.com/upload/files/pamiwiwavodevitofisel.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/8d97i0v2q9pqqi2frs4acj5rfp/didisagekejevom.pdfIn PDF document text
    • https://lensprovn.com/ckfinder/userfiles/files/70539700986.pdfIn PDF document text
    • http://girc.ncue.edu.tw/ckfinder/ckfiles/files/gogozus.pdfIn PDF document text
    • https://atlantidegattico.it/file/xewezobolexuberoxule.pdfIn PDF document text
    • https://bahceneryaman.net/public/content-images/files/37797092304.pdfIn PDF document text
    • http://staceyasp.com/UserFiles/file/49671421862.pdfIn PDF document text
    • http://odesignlab.ru/admin/ckfinder/userfiles/files/gekidi.pdfIn PDF document text
    • http://duszek-lasu.pl/userfiles/file/88465717746.pdfIn PDF document text
    • http://skiflogistics.ru/userfiles/file/lokena.pdfIn PDF document text
    • http://tbvshungviet.com/upload/files/36374483515.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/369ec31e08f70bfb5c35d48f76be3732/gipoxumazujexefi.pdfIn PDF document text
    • http://top-rubber.com/admin/fckeditor/editor/filemanager/connectors/upload/file/rapuravokadepasagikemamim.pdfIn PDF document text
    • http://secondhandgraphics.com/usrfiles/file/faxota.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/vinibututulefuzejibopifab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=dream+league+download+for+androidPDF 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_off0000adbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADBB 16316 bytes
SHA-256: 286d7c231e2bfdde94e8519e741e98d2a16db420dda6cb66b97859a8fad69fd6
font_01_sfnt_off0000d7b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B0 10620 bytes
SHA-256: 74dbf2a2ebc1c12a2450ae3fe0c6dea88e2f6f5b5059d2a30e036fbca3d67d7d
font_02_sfnt_off0000efba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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