Malicious PDF — malware analysis report

Static analysis result for SHA-256 0059828fb4f0ce9e…

MALICIOUS

PDF

83.1 KB Created: 2021-03-19 08:37:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 022c02fec67ada36555d99ca7e36215d SHA-1: db7346849314343d50ee5930a56f3b32617bcaba SHA-256: 0059828fb4f0ce9e0e156c6d4d6c66d4ff49cd955b9bc368dd8c3e884cffa303
96 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, with a high risk score. It contains an external URI pointing to a URL that appears to be a lure for downloading a PDF, likely containing further malicious content. The PDF structure itself also contains embedded URLs, suggesting a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/award?keyword=quantum+consciousness+book+pdf
    • https://static.s123-cdn-static.com/uploads/4417413/normal_5fce8f8d7a1db.pdf
    • https://cdn-cms.f-static.net/uploads/4472776/normal_601b3e19e2d09.pdf
    • http://sonifakeki.22web.org/superyacht_salary_guide_2018.pdf
    • http://xenuponominabek.iblogger.org/remington_700_sps_tactical_308_16.5_barrel_review.pdf
    • http://nakodinita.scienceontheweb.net/benzetacil_bula_anvisa.pdf
    • http://bajigesupin.iblogger.org/kirubetixinisutebadi.pdf
    • https://static.s123-cdn-static.com/uploads/4467298/normal_6004566837c8e.pdf
    • http://wojurimaxab.mywebcommunity.org/96751327397.pdf
    • http://dosijefa.mypressonline.com/best_shows_on_epix_2020.pdf
    • https://static.s123-cdn-static.com/uploads/4387046/normal_60011f0ecf007.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mawokale.myartsonline.com/52408555246.pdf
    • http://vozotol.rf.gd/30895953582.pdf
    • https://s3.amazonaws.com/nilafafakem/affichage_barre_formule_excel.pdf
    • http://dulaxidej.epizy.com/vector_mechanics_for_engineers_dynamics_solution.pdf
    • http://gudekor.rf.gd/wepovevolujabifatipa.pdf
    • https://s3.amazonaws.com/labitajaxatufib/boyz_2_full_movie_marathi.pdf
    • https://s3.amazonaws.com/xomudufe/repegijul.pdf
    • https://s3.amazonaws.com/megulu/baba_yetu_noten_chor.pdf
    • http://dejarovagozude.epizy.com/english_grammar_class_11_book.pdf
    • http://lazuletezofik.onlinewebshop.net/walorupuxezosopit.pdf
    • http://femasusatatovet.epizy.com/challenging_symmetry_worksheets.pdf
    • http://tabizamasozelo.epizy.com/zunotux.pdf
    • https://s3.amazonaws.com/gotenukevepunin/wedding_couple_images_free.pdf
    • http://kuwijiti.myartsonline.com/komuw.pdf
    • http://xowirife.rf.gd/positive_thinking_exercises_for_adults.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_off000104fb.bin
a13df02072079588253f858501ef7348bde3cd6234acfb84cdcee0ac670336cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x104FB 5436 bytes
font_01_sfnt_off00011765.bin
7390601a70d15dce1f8076f6d2dd458241a153ab00a73eb5ce15760e3cf3cb8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x11765 11160 bytes