Malicious PDF — malware analysis report

Static analysis result for SHA-256 16af39c2e6420822…

MALICIOUS

PDF

76.2 KB Created: 2021-03-14 13:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b2ec530fbe9977a981d1ecce4bff38eb SHA-1: a78fe572c1740df762368e43d666b94bdaaaab3a SHA-256: 16af39c2e6420822cdbe007af141c2cd25663096eddab7657ca7008828e820cc
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://xezojetit.ru/wix?keyword=sky+droid+pro+apk` suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic point towards a malicious document designed to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=sky+droid+pro+apk PDF link annotation
    • https://cdn.sqhk.co/mujutuzidip/ijI07Hv/92763494866.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/agfiixO/how_to_make_a_paper_bird_aeroplane.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403816/normal_603f9a91f3408.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498324/normal_5fcaeeb4c21c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461219/normal_5ff895e61f360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370080/normal_6022297081298.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/golepe/professional_skills_resume_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/11085104893.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/59742457900.pdfIn PDF document text
    • http://voxokemawabam.rf.gd/bible_lesson_for_married_couples.pdfIn PDF document text
    • http://lovopezabima.epizy.com/chennai_gana_prabha_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/gogovelovunekukuwuvaderob.pdfIn PDF document text
    • http://vagilamiporaw.epizy.com/ramasoki.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/tofaw.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/speakout_elementary_video_podcasts_worksheets.pdfIn PDF document text
    • http://ginazafinemot.rf.gd/evaluation_sheet_for_powerpoint_presentation.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/sulojuzerebaxetagos.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/26534344033.pdfIn PDF document text
    • http://fikikozazilut.rf.gd/excel_project_timeline_template.pdfIn PDF document text
    • http://jawikaginixuxuz.rf.gd/bavizabaposuku.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_off0000df15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF15 5012 bytes
SHA-256: a4c70f0e677b9bbe24a632f2e16a5f8b16505407b6a47af95f7cd954816c52f9
font_01_sfnt_off0000f03e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03E 16180 bytes
SHA-256: 106fac5cc4d00e819db99bd7e08335fcde2c3438386159e1f006ffd02bc4c794

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