Malicious PDF — malware analysis report

Static analysis result for SHA-256 965455c8c0635949…

MALICIOUS

PDF

75.2 KB Created: 2021-03-16 17:24:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd462918cf8ef0b924c0f59a78ab1bc2 SHA-1: 294dcedb000e068934ecfd174c10b8d620ec176d SHA-256: 965455c8c0635949b225c835606c4b4b5d8d84983ce373ef0263930cc98eb635
116 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and a medium heuristic indicating a callback phishing phone lure. The document body, though heavily obfuscated, contains text related to a JBL Flip 5 charger, which is likely a pretext for the phishing attempt. The embedded URL points to a suspicious domain, suggesting it may be used to host further malicious content or redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jacksth.ru/strik?utm_term=what+kind+of+charger+does+jbl+flip+5+use
    • http://muzomabavima.medianewsonline.com/34736467034.pdf
    • http://vipimuxatomefi.medianewsonline.com/zidudobabuwagitoremijo.pdf
    • http://kubosikavudux.mygamesonline.org/chick_fil_a_franchise_operator_application_process.pdf
    • http://jawixogu.mygamesonline.org/how_to_get_percentile_rank_in_excel.pdf
    • http://sizuxofutitarax.mypressonline.com/35075413884.pdf
    • http://tizakeguwowil.22web.org/ardougne_knights_guide_osrs.pdf
    • http://sevezor.scienceontheweb.net/naditetuxigelofod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sojufuka.atwebpages.com/coastal_carolina_community_college_academic_calendar.pdf
    • http://xeribelemuxi.rf.gd/rixadipuwed.pdf
    • http://sogurorirerew.onlinewebshop.net/arithmetic_book_by_rakesh_yadav.pdf
    • https://58f604bd-1fd8-4cfe-af9b-f15e67d030d5.filesusr.com/ugd/9a7439_7d3b2971829742689fef062adde53a6d.pdf?index=true
    • http://wiwosotu.myartsonline.com/whirlpool_wmh76719cs_door_switch.pdf
    • http://gateguka.epizy.com/1568664245.pdf
    • http://wutesejib.onlinewebshop.net/mathematics_of_finance_8th_edition_brown.pdf
    • http://piwakitidi.onlinewebshop.net/berubibubemiziwogugoguz.pdf
    • http://suvalomimo.atwebpages.com/pirates_of_the_caribbean_medley_piano_sheet_music.pdf
    • https://b3e719cc-30df-460f-a5cd-d2fa480fcfac.filesusr.com/ugd/b2b6a5_3393368241734c2183465d90e34ccf30.pdf?index=true
    • https://696f1bd8-06c3-47a7-a8f7-e83e17ec8d18.filesusr.com/ugd/5ad03d_176b0f14106744ba9b8b09940afd8660.pdf?index=true
    • http://xuvufajozurez.rf.gd/atharva_veda_english.pdf
    • http://wazeniwemir.onlinewebshop.net/mabawevufozipesoxafa.pdf
    • https://5ac9d038-517d-4536-97f6-676423289421.filesusr.com/ugd/b444d4_aff48ff274354ab790af482eee48f6be.pdf?index=true
    • http://xatulebebulife.rf.gd/36679883277.pdf
    • http://fefeseriwumasu.rf.gd/validity_in_research_examples.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_off0000e6e5.bin
8fee19b254c15a4844f60690cfba2f81d8e17d4f228beba8a5c391427d7aafa1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 5836 bytes
font_01_sfnt_off0000fad2.bin
fa5772cacf4dec1f5b10bb598917f214f9fd190065ee9beb61e64fea471ae70f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD2 10868 bytes