Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6316e8d07a36d1c…

MALICIOUS

PDF

72.6 KB Created: 2021-03-08 19:03:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 01a7b4254f87299c0fbc04ead89c2917 SHA-1: f12bd33b898e66e576297e74ff75980548c7cd15 SHA-256: c6316e8d07a36d1cd71f6dcfc58f9af051f99393c2353a27fb1bdf9a16f27210
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malicious redirection attempt. ClamAV detection and ML classification strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure, likely leading to a malicious site or further download.

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://lozipotod.ru/award?keyword=easy+adjectives+list+pdf PDF link annotation
    • http://jifarobajis.sportsontheweb.net/kujuzovuvujo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_5fd7c7a9e5251.pdfIn PDF document text
    • http://ipatovaalena.ru/catholic_saints_moviesviyh3.pdfIn PDF document text
    • http://twitter-center.com/who_does_lara_jean_end_up_with_in_the_book_ps_i_still_love_youqb6no.pdfIn PDF document text
    • http://form-lnstagramverificationbadge.com/sportspower_12ft_trampoline_netnmvk3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417980/normal_6016d7d49133c.pdfIn PDF document text
    • http://katermore.ru/subject_predicate_worksheet5h3jd.pdfIn PDF document text
    • http://shopsmmv.site/brothers_mfc_8890dw_manuall78u5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500677/normal_602eba449796f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/68785935472.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/cancel_my_spotify_subscription_on_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0247b16-6fc3-4ce2-b3ba-0f758916ab52/xbox_live_gold_card_code_scratched_off.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/private_birding_guide_costa_rica.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/79324427025.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/historical_fiction_book_report_template_middle_school.pdfIn PDF document text
    • http://merapenerabari.myartsonline.com/pals_virginia_kindergarten.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a92f11f-c276-47c3-9d16-964480a22670/21406465876.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/73268001537.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/which_is_the_easiest_drone_to_fly.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_off0000e0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A6 5248 bytes
SHA-256: e21a856aec555041df0c22759199887f8e15da22aaaad846d89ae1e92b8615bb
font_01_sfnt_off0000f2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B1 10100 bytes
SHA-256: 48f670d16a48582a11a990c29d6f3908672414832d4a570fcac0330cb8413a0a

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