Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b5c0d603622d72a…

MALICIOUS

PDF

106.7 KB Created: 2021-02-12 14:57:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3077687a0b5bbf80be886a8dba5db92 SHA-1: 4a09fe90d6a3dd01ad9ca90392fd7d45dcaa1050 SHA-256: 3b5c0d603622d72afe24d1394893d8bbe3eccd8773d23e4b3a8a80e3f9ef46dc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this assessment. Although no scripts were explicitly extracted, the presence of an external URI within the document body suggests an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=field+guide+to+birds+of+mexico+and+central+america
    • https://roxuxafuz.weebly.com/uploads/1/3/0/8/130813852/9505634.pdf
    • https://zikawudewodag.weebly.com/uploads/1/3/4/5/134585044/8573196.pdf
    • https://cdn-cms.f-static.net/uploads/4489852/normal_601b6497634df.pdf
    • https://cdn-cms.f-static.net/uploads/4461245/normal_5fd15899f3186.pdf
    • https://static.s123-cdn-static.com/uploads/4471688/normal_5fcdd7adbedee.pdf
    • https://static.s123-cdn-static.com/uploads/4417208/normal_5ff4d0621f83c.pdf
    • https://cdn-cms.f-static.net/uploads/4414489/normal_6015b08d82f76.pdf
    • https://tesafugefiwa.weebly.com/uploads/1/3/5/3/135318727/xadalofibimij.pdf
    • https://static.s123-cdn-static.com/uploads/4494883/normal_5fe0769fbed31.pdf
    • http://faketikus.22web.org/barfi_movie_songs_free.pdf
    • https://menaminalopu.weebly.com/uploads/1/3/5/3/135318725/jozopetare.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wozowuledij/best_crib_sheets_for_daycare.pdf
    • http://kemeterotef.rf.gd/agent_vinod_full_movie_720p_bolly4u.pdf
    • https://s3.amazonaws.com/vonuxagupeduze/nifibaxutupupemenuzozanal.pdf
    • http://petejubetitoma.rf.gd/gejomabanibatoxoto.pdf
    • http://temekem.epizy.com/net_framework_4._5_2_developer_pack.pdf
    • http://sugizujesel.epizy.com/ubuntu_iso_for_vmware.pdf
    • https://s3.amazonaws.com/lixasifasi/formule_calcul_imc_adolescent.pdf
    • https://s3.amazonaws.com/kofabube/listening_ielts_score_sheet.pdf
    • https://s3.amazonaws.com/lovomijelun/administrao_financeira_hospitalar.pdf
    • http://kujafugakare.epizy.com/82660583092.pdf
    • http://nopizapokife.epizy.com/business_proposal_letter_template_microsoft_word.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_off000166bd.bin
5ee496f4de42f1a12d08ea0b9f7ca766194966b04bbbbebd31b9489f99ad74b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x166BD 5504 bytes
font_01_sfnt_off00017966.bin
c96614072af6dd79d2de29c73e1f8400669cb0fadac47a0fc9eee5e7c034b03c
pdf-font-stream PDF embedded font (sfnt) at offset 0x17966 10240 bytes