Malicious PDF — malware analysis report

Static analysis result for SHA-256 644d65a19609b822…

MALICIOUS

PDF

80.9 KB Created: 2021-05-23 02:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bceeb2fa43cbd9b04f29b551e6edb80c SHA-1: 27f752752300354c0159beab35ae9293967243ea SHA-256: 644d65a19609b82264c1873d8cf542d1fb54896a89881a9cc9ae64cfcfde3d27
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, some of which point to suspicious domains, suggests an attempt to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/g5cbidrdbuahehh3j05fnqvl4p/lejozilaxemojuwapoxas.pdf
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/f5aac6d300b378f582e2c53ab50ae74b/ketatomagubisatonolakejov.pdf
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e42f9e31a6---jibewibalogapuvonakijo.pdf
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d1061165f---94724749193.pdf
    • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca461a893a---gegisuwamawopiduzuwo.pdf
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608c46b9dd5c7---37903421361.pdf
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/pg30quanklkrq38l1t864v3gjo/85684421628.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/5a87a33cc19d43a9ab57a0125d8efb1b/polapojage.pdf
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4ff7e40a0---jusikujivegutikatekoteret.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/e36h177m1nihtscnqjmkqcj05j/99405688510.pdf
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3901e9b380---17280504150.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1b7335251---gedininulidejigojiparu.pdf
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608015bf4f395---43923759096.pdf
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cfab6d3e07---xabedugapikijuvoraxe.pdf
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/dca44ebcf6d334044a38fc3df6b06e02/39056933786.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=balanceo+de+ecuaciones+por+el+m%25C3%25A9todo+de+redox+%2528+oxido+reducci%25C3%25B3n+%2529
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec67.bin
8a186d3f32bf7b838f62b46e59f469abddb21d7f3567d72e969bc30e687307ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC67 5652 bytes
font_01_sfnt_off0000fefb.bin
d7f8234ba1aa9b31e10032b53776558a9e6ddee0a26e0ff7f89cfc9ec015229b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFB 11568 bytes
font_02_sfnt_off000124a4.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124A4 4324 bytes

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