Malicious PDF — malware analysis report

Static analysis result for SHA-256 297a53e3c09163a1…

MALICIOUS

PDF

79.8 KB Created: 2021-03-29 15:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77e2a0fe5d79a64bfbf0ba181a38af61 SHA-1: ec339443bdbee8924897ab849fc6572cb425f73a SHA-256: 297a53e3c09163a11a5baa7e1b3328f2ae31e08d5e914b87e66b1cf8a62a215e
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 URL that is likely part of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious content, potentially for phishing or to download further payloads.

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://druttle.ru/wix?keyword=construction+profit+and+loss+statement+sample
    • http://verifiedbadges-form.com/dusivikelewijawaaqwro.pdf
    • http://shop50off.info/biology_genetics_test_review_answer_key62k7n.pdf
    • http://rubisteq.online/interview_questions_and_answers_for_sen_teaching_assistant004xu.pdf
    • https://cdn.sqhk.co/moserusoba/eAPenL3/best_buy_playstation_5_pre_order_time.pdf
    • https://cdn.sqhk.co/kuvapipitol/4gehg9C/86203299198.pdf
    • http://3-bureaureport.info/gawuxadaguxizigorumut7twu1.pdf
    • https://cdn.sqhk.co/xudekutof/jhhf6DO/adidas_sweats_mens_sale.pdf
    • http://japancar-sib.ru/python_artificial_intelligence94vd8.pdf
    • https://cdn.sqhk.co/nilofixogezu/aQngijc/endless_surfers_subway_runners_3d_model.pdf
    • http://opensol.xyz/43488001035t3li1.pdf
    • http://topsalon.xyz/how_to_set_date_timex_ironmanr3dfm.pdf
    • https://cdn.sqhk.co/majatuto/jMKhihi/perranporth_eyeball_surf_report.pdf
    • http://bcpreactiva-enlinea.com/27174483688s0i3k.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b244ce36-dabf-44ad-96c3-41d1677c257a/ncaa_division_2_football_player_rankings.pdf
    • https://uploads.strikinglycdn.com/files/bb83866a-ecf8-4563-8ee9-389528d8aca6/purojo.pdf
    • https://uploads.strikinglycdn.com/files/c2bb0137-fc8a-4003-a9bf-52e5b75e9527/7779992361.pdf
    • https://uploads.strikinglycdn.com/files/ee5d6b36-a6ea-486a-aa05-5bcb6b5b3685/atmananda_krishna_menon.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_off0000f9d1.bin
532c8c6b73d32f443eb40fe415dc68344d16fa655d40193443b5810b2ccfb949
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D1 5208 bytes
font_01_sfnt_off00010b6d.bin
52331596e8280ab82bf37516b0f385f3a9361c455aaa4422857019c685c0dddb
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6D 11396 bytes