Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c58218a1b517297…

MALICIOUS

PDF

80.8 KB Created: 2021-09-11 11:07:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 05acdabb2a3fa576e1b2845e63a5f207 SHA-1: 84111ab0bda775aa65098e145969d66facd9cc8b SHA-256: 2c58218a1b517297d381e9c0a433e71794bd45d76d1d24acbf566c87515e4dc1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to potentially malicious or phishing sites, and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic suggests a deliberate attempt to obscure the true destination. The document body is heavily obfuscated and unreadable, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • 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://yifff.se/userfiles/file/dunofalibo.pdf In PDF document text
    • http://keystoparadise.com/userfiles/files/laxigujitabubu.pdfIn PDF document text
    • http://electric-kernbichler.at/53685610294.pdfIn PDF document text
    • http://studioturina.com/userfiles/files/42105100856.pdfIn PDF document text
    • http://ballarioarchitetti.eu/userfiles/files/fikuk.pdfIn PDF document text
    • http://koreadramatour.com/FileData/ckfinder/files/20210907_7244B072C7991DE8.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132d0b07af81---60394057451.pdfIn PDF document text
    • http://studiosiciliani.eu/userfiles/files/rimusiwimanudura.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/files/66499575889.pdfIn PDF document text
    • http://manpukuorder.com/uploads/files/73165748232.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/83916564539.pdfIn PDF document text
    • https://lostfoundglobal.com/userfiles/file/40132076134.pdfIn PDF document text
    • https://xpress2.eu/ckfinder/userfiles/files/84415353703.pdfIn PDF document text
    • http://www.sospapa24.com/lib/ckfinder/imgupload/files/72070139625.pdfIn PDF document text
    • https://carpenterstouchnj.supremeroi.com/FCKeditor/file/84992319360.pdfIn PDF document text
    • https://ms2gacor.com/contents/files/52292840527.pdfIn PDF document text
    • https://lockerova.eu/admin/upload/documents/zavogiwewomezafojutadax.pdfIn PDF document text
    • https://impulsa.mantareys.net/uploads/plantillas/files/zubujebami.pdfIn PDF document text
    • http://gotoippc.com/ckfinder/userfiles/files/36977679692.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/bd3217b69ddb567815e3e76b2ba72d01/22501265300.pdfIn PDF document text
    • http://ingmarcofaedi.com/userfiles/files/vesinogil.pdfIn PDF document text
    • http://swvocal.com/data/se2/file/17258185389.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=vidmate+3+apk+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_off0000d76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF84 10604 bytes
SHA-256: e998d5f76fc999cb97925980199841b5c605a78d87d450efa8f9c20fac4484c5
font_02_sfnt_off000107c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C3 18056 bytes
SHA-256: 7a42c351d81293d96ba6b84dbfe28b7a208fa3a1c8bca66d6ee94fa8a56e095b

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