Malicious PDF — malware analysis report

Static analysis result for SHA-256 b809d32109029153…

MALICIOUS

PDF

73.0 KB Created: 2021-03-20 05:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34134628d4978095e97262f2d44e5efe SHA-1: 449e069e043e501c0d7ce53b96d29f45610237f3 SHA-256: b809d321090291537bf7bbc1e1e9cbc185696b0f3b8d3ed4bb52a827a5dc6dc3
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a phishing site, masquerading as a manual for a Fluke 323 clamp meter. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the presence of external URIs suggests a redirection to a malicious payload or phishing page.

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://resalured.ru/strik?utm_term=fluke+323+true-rms+clamp+meter+manual
    • https://cdn.sqhk.co/dilizilozok/InjgjiB/spotify_wear_os_offline.pdf
    • https://cdn.sqhk.co/lomasamube/hnhg2fW/summoners_war_secret_dungeon_guide.pdf
    • https://cdn.sqhk.co/zifeduwa/jbbZfgh/boulangerie_urban_bakery_paris_10.pdf
    • https://cdn.sqhk.co/xuzuvazol/cQhegdP/lomopeturex.pdf
    • https://cdn.sqhk.co/novozefox/cbGVwb6/97045953254.pdf
    • https://cdn.sqhk.co/wujakegu/jf9w2V2/wallpaper_for_gamers_4k.pdf
    • http://nitiwopororotef.mypressonline.com/91932013392.pdf
    • http://gojevomarokabe.getenjoyment.net/retirement_planning_checklist.pdf
    • http://semengergel.ru/bissell_pet_pro_carpet_cleaner_owners_manualmi245.pdf
    • http://strita.space/39884952085kjm34.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://faxiruvud.myartsonline.com/40260529865.pdf
    • https://s3.amazonaws.com/fapaga/surah_yasin_with_bangla_pronunciation.pdf
    • https://s3.amazonaws.com/paxivogedewilu/soldier_of_fortune_chords.pdf
    • https://s3.amazonaws.com/lakadutof/dividing_fractions_word_problems_worksheet.pdf
    • http://kiluwemejibe.rf.gd/929741811.pdf
    • http://xirexadugimog.atwebpages.com/lg_g4_manual.pdf
    • http://dagapevas.rf.gd/buvedumikobijinivonipog.pdf
    • https://s3.amazonaws.com/pisik/tanuvubupuzilawi.pdf
    • http://nibopinalilabaj.onlinewebshop.net/aprendizagem_organizacional_concurso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3e9.bin
04386228342a0c31588b316633ef58e22f03b5b3a5b409f5f338a810e0792341
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E9 2032 bytes
font_01_sfnt_off0000dd16.bin
a77043d5e1c5c508977433bb82114fa086e90e61791ac55631e482b6d53a5d30
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD16 5424 bytes
font_02_sfnt_off0000ef7c.bin
96b336a281363bae2cfefbfab332b370d05457ad4b6b4d6f89b340954f3215f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7C 10852 bytes