Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee382296f181ef1…

MALICIOUS

PDF

93.6 KB Created: 2021-05-08 22:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 056582b9411533eb98abd6528f83fe47 SHA-1: d7643136c796d22be20d981ccaa225a559c8e4d4 SHA-256: 4ee382296f181ef1493a6e0c144f928e0ebffda601cc2d144692c49238bd649f
104 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is malicious, specifically flagged by an ML classifier and ClamAV as a phishing trojan. It includes an external URI pointing to a suspicious domain, likely intended to deliver a payload. The document body, though heavily obfuscated, contains references to hardware manuals, suggesting a lure to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/strik?utm_term=asus+m4a78t-e+manual+pdf
    • http://fijexojor.getenjoyment.net/wevutuve.pdf
    • https://cdn.sqhk.co/pefatipi/abggwhi/jezisigutesowepebuwo.pdf
    • https://cdn.sqhk.co/nibugikik/Gjaig3X/bible_games_word_search.pdf
    • https://cdn.sqhk.co/kulobuwaxegu/jhifgiC/jopufadudirode.pdf
    • http://julidixove.22web.org/questes_organizao_da_administrao_pblica.pdf
    • https://cdn.sqhk.co/gujurolekuma/hcgctGo/drop_off_your_resume_in_person.pdf
    • http://zitalogeloluwiw.mygamesonline.org/anlise_estatstica_de_dados_geolgicos_landim.pdf
    • http://wedasuf.getenjoyment.net/waltz_in_a_minor_piano_sheet.pdf
    • http://womovenum.sportsontheweb.net/48835317425.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4e87f2ba-7559-4978-a710-eff18f4bd703/31388605809.pdf
    • https://s3.amazonaws.com/biwubeleba/32931576067.pdf
    • http://kawisud.rf.gd/replace_trash_can_lid_san_diego.pdf
    • https://s3.amazonaws.com/nefunupu/vuvuwivirelofar.pdf
    • https://s3.amazonaws.com/xasovewipeje/acer_travelmate_c200_user_manual.pdf
    • http://wusuposakatoxel.myartsonline.com/zofobalopidipuzosafod.pdf
    • http://nezenomawaza.epizy.com/counting_on_to_add_worksheets_grade_1.pdf
    • https://uploads.strikinglycdn.com/files/3b36bdab-5823-4c8b-8974-cfdac0338314/estandares_y_expectativas_de_matematicas_septimo_grado.pdf
    • http://bumurulepowele.myartsonline.com/narizizubunaxukupa.pdf
    • https://s3.amazonaws.com/nalifij/alcatraz_visitor_guide.pdf
    • http://zifiroduvibo.rf.gd/52398358208.pdf
    • http://befatig.epizy.com/razones_trigonometricas_de_un_angulo_agudo_ejercicios_resueltos.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_off00012e7b.bin
0506eb6af2bfaf484ab0cd9d5d9f89d2939bda544a121757b0447849816ec10c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E7B 5472 bytes
font_01_sfnt_off00014124.bin
bfa427fa633e41b634e5f3603613366c76ee1d70521d6834b36a457c4760c6e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14124 11912 bytes

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