Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dd16035ecdedd2…

MALICIOUS

PDF

65.1 KB Created: 2021-03-02 00:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: b1c45e8516eb8129cc5cf5f40624058f SHA-1: 786becb36e677ae8786a64882c1bdf710d91850c SHA-256: c5dd16035ecdedd2d89beb1c8bcb25a10ebd92b561fe7a819bf6582bb809722f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to potentially malicious domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to search results, likely intended to redirect users to a malicious site for further exploitation or phishing. The presence of external links indicates an attempt to download or redirect to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9618

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/award?keyword=gone+michael+grant+wiki PDF link annotation
    • https://vunisanege.weebly.com/uploads/1/3/0/8/130813420/8c474c.pdfIn PDF document text
    • https://zukuvexoxowi.weebly.com/uploads/1/3/4/5/134597017/274dbd389.pdfIn PDF document text
    • http://lisolu.org/586353999277af6k.pdfIn PDF document text
    • http://letgtma.bid/its_a_great_day_to_be_alive_gifemqpf.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/plagiarism_quiz_answer_key.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/danawaluweb-jidutofosu-suxuzofego.pdfIn PDF document text
    • http://216tilford.com/beyond_enemy_lines_2_reviewudgfx.pdfIn PDF document text
    • http://puzexijabin.mypressonline.com/how_do_you_get_simpoints_on_sims_3_for_free.pdfIn PDF document text
    • https://xegadoponuxi.weebly.com/uploads/1/3/0/7/130775279/zuwuva.pdfIn PDF document text
    • http://smm-target.ru/47038048959xxkx7.pdfIn PDF document text
    • https://vafevovelawa.weebly.com/uploads/1/3/1/4/131407112/dawixi.pdfIn PDF document text
    • http://foyou.store/google_material_design_form_guidelinesoa2vi.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/local_anesthesia_composition.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/add_subtitles_to_video_online_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/amazing_spider_man_game_free_apk.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/90712422972.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/first_grade_reading_and_writing_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/49185266862.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/are_pointers_cuddly.pdfIn PDF document text

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