Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e49513aaf6090f…

MALICIOUS

PDF

73.8 KB Created: 2021-03-03 21:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 808f35bd55530f1c47f81c82a42628e6 SHA-1: 281ae3897661adf2f97e4dc04da3761d19c0397e SHA-256: 27e49513aaf6090f0520c33f863977eb5532afb34100fe244f333f9a9ee706cb
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating an embedded external URI and ML classification flagging it as malicious. The document body, though heavily obfuscated, contains text related to 'Samsung top load washing machine error code', suggesting a lure. The primary malicious URL identified is https://gimoguvi.ru/award?keyword=samsung+top+load+washing+machine+error+code+dc, which is likely used to deliver a secondary payload or redirect the user to a phishing site.

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://gimoguvi.ru/award?keyword=samsung+top+load+washing+machine+error+code+dc PDF link annotation
    • http://byseles.xyz/votifamitr2vj.pdfIn PDF document text
    • http://dusixose.22web.org/24338158731.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/zonopabaseb373v.pdfIn PDF document text
    • http://hardcreditcheck.info/beautiful_barbie_doll_photosxr41q.pdfIn PDF document text
    • http://sushibara.net/mepanisimagoca73n.pdfIn PDF document text
    • http://sizuxofutitarax.mypressonline.com/historia_universal_jackson_spielvogel_gratis.pdfIn PDF document text
    • http://klyshsheff.xyz/airfighters_pro_pc3p3w8.pdfIn PDF document text
    • http://itawegan.space/6977552004jkon0.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/53733698704.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/lusabifef/alvin_and_chipmunks_2_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/bharat_ane_nenu_songs_telugu_lo.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/baltimora_tarzan_boy_video.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/rutawagozos.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/us_polo_assn_watch_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/cushman_and_wakefield_italy_office_market_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/form_of_noun_verb_adjective_adverb.pdfIn PDF document text
    • http://xemigososefof.atwebpages.com/reid_technique_of_interviewing_and_interrogation_training.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_off0000e401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE401 5680 bytes
SHA-256: eeaa6cf3e5eb0fcc81a1d12b4e11603758893995f1cc18fac491a32547f3d91c
font_01_sfnt_off0000f745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF745 10020 bytes
SHA-256: 31815913a6cf4b72163e9c14f8f5efea850d2a289742aa133983575e47e8e190

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