Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ecdaced5d54bb7e…

MALICIOUS

PDF

84.6 KB Created: 2021-02-15 04:37:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 981b9472c71d35e73de4a6403539ac68 SHA-1: 7e15b1f0bacd33dc443c83c46239dd427dec9c7b SHA-256: 2ecdaced5d54bb7eda4126a6b698a0e44b93d625f525365efd5c6d1829d4ba69
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely used for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

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://seumenha.ru/wix?keyword=cstephenmurray+thermodynamics+worksheet+answers
    • http://urolog.xyz/coconut_macaroons_nutritional_information2s75t.pdf
    • http://liketime.online/2887482059298zcc.pdf
    • https://cdn-cms.f-static.net/uploads/4425726/normal_60148ff7896ea.pdf
    • https://cdn-cms.f-static.net/uploads/4374374/normal_6015fcbe6835b.pdf
    • http://instasurprise.online/14868978107sd0h5.pdf
    • http://prosale.company/kakofulugugagedenufekiwufkuaqt.pdf
    • http://top-agent.ru/hotel_business_proposal_samplevndft.pdf
    • http://help-business-media.com/fuvevujabexuwizokokedepas8w96l.pdf
    • http://easylearning.space/wulusanilawonosasuwizazanlrp.pdf
    • http://1xbet-regi.site/cl_dactivation_farming_simulator_20154x1ot.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bezorito/90304154555.pdf
    • https://s3.amazonaws.com/padosumifubobo/carter_burwell_songs.pdf
    • http://wafitiw.epizy.com/honda_cb1000r_2018_manual.pdf
    • https://s3.amazonaws.com/damerirazib/zitomizikilivenulowu.pdf
    • http://dimufinafez.rf.gd/elephant_trunk_snake_care_sheet.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010cee.bin
8a5334808430d1ea5692353deb67f609d0876f6218a2334ec7833d15b83908ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CEE 5444 bytes
font_01_sfnt_off00011f5c.bin
4a36d7b31389da98d89d50b664b9afdd8744834bb2b0c758088dcc1840f92675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5C 11084 bytes

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