Malicious PDF — malware analysis report

Static analysis result for SHA-256 4534a5acc7b39796…

MALICIOUS

PDF

83.1 KB Created: 2021-03-25 15:39:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c3fdad8e31d935e0bb054f19d2ec485 SHA-1: 81355b604c1f4d004e9aed26a8d8542cd50c6873 SHA-256: 4534a5acc7b397965e4f0e1e3951897fdde260b1b6db228203f5d57c595f1cd2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains text that could be interpreted as a lure for a 'meeting call'.

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://maypoin.ru/wix?keyword=riverclan+meeting+call
    • https://static.s123-cdn-static.com/uploads/4465396/normal_5ff65f3b198d0.pdf
    • https://cdn-cms.f-static.net/uploads/4387061/normal_604a1bb6b9d04.pdf
    • http://rebejuguvodog.22web.org/wills_eye_physicians_near_me.pdf
    • http://winoxolupuvil.getenjoyment.net/how_to_get_better_mpg_5.9_cummins.pdf
    • https://cdn-cms.f-static.net/uploads/4460243/normal_6028ec4c660be.pdf
    • http://zapixexarepol.medianewsonline.com/how_to_disassemble_nespresso_vertuoline.pdf
    • http://boforotaje.mywebcommunity.org/subway_map_nyc.pdf
    • http://jotusimemirido.sportsontheweb.net/epson_xp-820_review.pdf
    • http://serikanipesemo.iblogger.org/soul_music_blogspot.pdf
    • http://fejukoturig.medianewsonline.com/54599647769.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://luvabokinoleg.onlinewebshop.net/tokikidin.pdf
    • http://refusunono.onlinewebshop.net/zexefivavotejo.pdf
    • http://dilutibu.onlinewebshop.net/sijeluzinumipof.pdf
    • http://jisunopesaluzi.atwebpages.com/bohemian_rhapsody_piano_sheet_numbers.pdf
    • http://wosidekole.rf.gd/6308245231.pdf
    • http://silimafimutoj.rf.gd/data_analysis_in_mixed_methods_research.pdf
    • http://pasifowon.atwebpages.com/73195671258.pdf
    • http://zutaturusix.myartsonline.com/60669076097.pdf
    • http://ditiruvovuluka.epizy.com/danganronpa_2_5th_class_trial_answers.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_off00010847.bin
51c7fccd0d1b21a9efa4f7cc581da394cee59d78de0eff0766db56e5c1a8d97a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10847 5008 bytes
font_01_sfnt_off00011948.bin
e1bd2d666ccda21fc1ad51d59c3cef28db5fc503326ec039270724e5e343886b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11948 11240 bytes

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