Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb1f8c5d8525bdf…

MALICIOUS

PDF

77.3 KB Created: 2021-04-06 18:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5207912a5e0b70c438fcbd882080d029 SHA-1: d1c4ddd2c7614342152a8a75011ba9c83d07c108 SHA-256: acb1f8c5d8525bdfc536c67c9bbcc483bd5e71c0b6ca6cfaa412f15007ec6b2c
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and contains an external URI pointing to a URL that is likely part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, suggests a lure related to employment contracts. The presence of multiple embedded URLs further supports the malicious intent, likely for downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/123?utm_term=employment+contract+template+uk
    • https://cdn.sqhk.co/sunalikefazo/gEjhjaa/tijer.pdf
    • https://cdn-cms.f-static.net/uploads/4377114/normal_60512e73b5b39.pdf
    • https://static.s123-cdn-static.com/uploads/4423757/normal_5fcf92a8ea1d5.pdf
    • http://kozidozilujivox.getenjoyment.net/amazon_case_study_2020.pdf
    • https://cdn.sqhk.co/dekavaka/fjfEhci/gtr_car_simulator_download.pdf
    • https://cdn-cms.f-static.net/uploads/4484610/normal_603b37563fade.pdf
    • https://cdn-cms.f-static.net/uploads/4414678/normal_6017b6f973329.pdf
    • https://cdn.sqhk.co/fosuzonarefi/aCigkgf/38316912052.pdf
    • https://static.s123-cdn-static.com/uploads/4459621/normal_5feb74c359da2.pdf
    • http://mowefopovog.mywebcommunity.org/11556688908.pdf
    • https://cdn.sqhk.co/ridefapagol/ejbgfhc/jumia_black_friday_phones.pdf
    • https://cdn.sqhk.co/vilosezuj/71Ugcjd/7420799534.pdf
    • https://cdn.sqhk.co/mosugukasiba/idggxhg/xonixod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fibubaxuvuvixik.epizy.com/solitaire_collection_for_windows_8._1.pdf
    • http://kaxuwenewutexu.myartsonline.com/zimuwalexapogevaw.pdf
    • http://fodunimuka.epizy.com/grammar_test_for_grade_6.pdf
    • https://uploads.strikinglycdn.com/files/8dd8cac0-7bcf-4600-8736-855defbc155e/the_life-changing_magic_of_tidying_up_audiobook_free_download.pdf
    • http://genolewedusu.myartsonline.com/architectural_drafting_for_interior_designers_lydia_sloan_cline.pdf
    • https://uploads.strikinglycdn.com/files/bffed65c-903c-4d98-b0ba-03f043aed0b6/how_to_fix_leaky_gut_dr_axe.pdf
    • https://uploads.strikinglycdn.com/files/64394388-c736-46c7-9187-30bc404a3596/how_to_sell_binance_coin.pdf
    • https://uploads.strikinglycdn.com/files/fb948a6c-be15-45cd-8f1d-93090204ee4b/6061836144.pdf
    • https://uploads.strikinglycdn.com/files/f551f5a0-345a-4da1-80f3-58753294bb86/kufavitopis.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_off0000eebc.bin
edb1871bcd08a75be603de312161a0ee3fd06203b75d82b58a30cd612311ea2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBC 5024 bytes
font_01_sfnt_off0000ffcc.bin
b16eac3b5099f6ed24ed2f4e81ae989049effd9bf7fc02d577da0d0bad4e27ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCC 11300 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.