Malicious PDF — malware analysis report

Static analysis result for SHA-256 4668d95bcd0608ac…

MALICIOUS

PDF

83.0 KB Created: 2021-02-09 02:01:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 472bd8a51fa70793df88445a87443e7e SHA-1: d66a41a5f73e561d1a38d68915ddb3169a2e4352 SHA-256: 4668d95bcd0608aca758f9faba5c1680392a455cd2436751ba6b42b5a533d06d
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing lure designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/wb?keyword=sample%20incident%20report%20form%20aged%20care In PDF document text
    • https://cdn.sqhk.co/xovatagemi/j3gj4IT/email_notification_sounds_windows_10.pdfIn PDF document text
    • http://freud.icu/degekuwojalakejixi6droz.pdfIn PDF document text
    • https://cdn.sqhk.co/zimuteraf/Ugetdii/wowalukogijetop.pdfIn PDF document text
    • http://moviesaddaa.online/pejijamurebigeruknr7ug.pdfIn PDF document text
    • http://razvivatel.blog/nipuvowobizpok2.pdfIn PDF document text
    • http://help-copyrighteamservice.com/xufuruzelusinufawirobukadhmbn4.pdfIn PDF document text
    • http://natiral.space/a_guide_to_the_business_architecture_body_of_knowledge_downloadsssix.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaso/yhffjgK/online_video_call_karne_ka_apps.pdfIn PDF document text
    • http://eroganoficial.site/videos_like_de_amor_cortosvbh4s.pdfIn PDF document text
    • http://wekifojedopike.22web.org/jepeleregeruvomubebeboz.pdfIn PDF document text
    • https://cdn.sqhk.co/mofekuma/yjfIxhc/12531767665.pdfIn PDF document text
    • http://bu-markett.com/blue_moon_lyrics_beckzgvhy.pdfIn PDF document text
    • http://sibuvre.com/first_aid_kit_amazon._cakis0p.pdfIn PDF document text
    • http://ueuniti.website/wilenurifovufill4aw.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/betefowubevat/58991706174.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/lobazejasuwexejimad.pdfIn PDF document text
    • http://zawozunilutufu.rf.gd/android_mobile_restore_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/xudimufixiwezaje.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/nilabadojalabaridobov.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/7815618648.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/lafuzagoxifu.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/requiem_for_a_dream_imdb_parents_guide.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_off0001082c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082C 5400 bytes
SHA-256: c1e450843270ef51124689a98fe92fc2341fb8f8f969d4d35c274115b352902b
font_01_sfnt_off00011a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A73 10536 bytes
SHA-256: 719e381615f8173ebf5262e00a7b2c152093914fa22f38c7bc54a130f353b80e

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