Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceca13679ffe0e63…

MALICIOUS

PDF

72.5 KB Created: 2021-02-28 13:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1e3d2cc74777897bf1bee62a285a1d2b SHA-1: 9c59f26e053fd3529667bae4d4f3ddd5d9366e3f SHA-256: ceca13679ffe0e636b9d414904a99f0ed67305d75a7cdaf8e6f0aa91c8e11b88
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. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into clicking it for phishing or malware delivery. The document body, though partially corrupted, suggests a lure related to legal information, which is a common tactic for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/award?keyword=illinois+safe+haven+law+age+limit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407100/normal_600fa916a6d17.pdfIn PDF document text
    • http://ziwumununazofal.iblogger.org/google_sheet_append_text.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374369/normal_5ff46f9c426ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458840/normal_5fd91f8dadf04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459654/normal_6004781cd3d85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471114/normal_6005c0fb90a3a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://salogun.rf.gd/veloverekeruzutit.pdfIn PDF document text
    • http://saxowuwu.rf.gd/ruvixupilobesixexumig.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/attack_on_titan_2_final_battle_gameplay.pdfIn PDF document text
    • http://vunonam.atwebpages.com/less_than_zero_watch_online_free.pdfIn PDF document text
    • http://bufirapopedodo.rf.gd/indefinite_adjectives_exercises_with_answers.pdfIn PDF document text
    • http://nexaware.epizy.com/principles_of_auditing_book.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/7251433225.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/how_long_does_disability_determination_take.pdfIn PDF document text
    • http://pifamodaz.rf.gd/disuporex.pdfIn PDF document text
    • http://zebenubanulobuj.rf.gd/acog_guidelines_hypoxic_ischemic_encephalopathy.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/feguxivorirep.pdfIn PDF document text
    • http://totiwofosu.epizy.com/robbery_bob_2_mod_apk_terbaru.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBA 5172 bytes
SHA-256: 5121a19782d4624087da63c84042388fe093822aa020df11a2de6615e888b800
font_01_sfnt_off0000ef4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4C 11120 bytes
SHA-256: 498a8d4a6b776fddf2b3bfaf22f3e4095f4ee19e8d2125f2f95c1be4956f8ab5

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