Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb43b9f70bc9cfdb…

MALICIOUS

PDF

75.4 KB Created: 2021-03-26 03:36:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a4dece0bad6d28238c614d3aa051bb3 SHA-1: 7bf1714ca1663139e756158317696a438d600f08 SHA-256: eb43b9f70bc9cfdb2123613fe5aaa8d50f120ef35a97b86a7f59e1fe3a10d764
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that redirects to a domain associated with phishing or malware distribution, disguised as a search result. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting a malicious site, likely to download further payloads or phish for information.

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://dafemum.ru/aws?utm_term=what+is+the+order+of+sedimentary+rock+formation
    • http://roboludawu.mywebcommunity.org/all_yours_stranger_free_download.pdf
    • http://dusikazo.mypressonline.com/59536816490.pdf
    • http://toppiksnack.xyz/mawoji6ktje.pdf
    • http://xeberul.mywebcommunity.org/kumefabun.pdf
    • http://xokubenafap.66ghz.com/98965267462.pdf
    • http://rejamar.sportsontheweb.net/ceh_v10_certified_ethical_hacker_study_guide.pdf
    • http://sulokowado.iblogger.org/hammurabi_code_was_it_just.pdf
    • http://interstart.online/fujazadiposavuxemasuvevdfn2c.pdf
    • http://dapurixid.sportsontheweb.net/computer_hardware_and_networking_courses_online.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xapijifas/best_emotional_english_songs.pdf
    • https://s3.amazonaws.com/nojemi/3913913693.pdf
    • http://zoduxipuvivedab.rf.gd/rebif.pdf
    • http://filivuso.rf.gd/because_of_bethlehem_study_guide.pdf
    • http://gubowejuxenixu.rf.gd/cg_jas_geet_audio_song.pdf
    • https://s3.amazonaws.com/ragejufa/marshall_mg100hcfx_half_stack_review.pdf
    • https://s3.amazonaws.com/luborinizu/after_effects_free_transform_image.pdf
    • http://keretagukuvar.epizy.com/where_can_i_find_the_disney_princess_filter_on_tiktok.pdf
    • https://s3.amazonaws.com/lewuli/bodine_b50.pdf
    • https://s3.amazonaws.com/jodabiladezot/malayala_manorama_calendar_2019_march.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_off0000eb3f.bin
c319f67f4245486b014e275c8db73a3d6bc93a9ab052703c9bc62a5d77501029
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3F 5408 bytes
font_01_sfnt_off0000fd8c.bin
9addca6223aad8a745ab3d06b04b231dcbfec632125a2edbc264f54bff70a86e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8C 10320 bytes