Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb3923fc3ccabed…

MALICIOUS

PDF

82.9 KB Created: 2021-03-17 15:06:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3860a7698827446021fa5ee52ba0ace SHA-1: dac8b2bf1b8fb759adcd23512d4a76fd943fb79a SHA-256: 8cb3923fc3ccabed75c3373f63b582b2264827cc2e69613926b07369a82d8487
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for 'san diego prayer times 2018', likely to trick users into visiting a malicious site. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. No scripts were extracted, but the presence of external URIs and phishing indicators suggests a social engineering attack.

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://kuzutuzo.ru/wix?keyword=san+diego+prayer+times+2018
    • https://static.s123-cdn-static.com/uploads/4486751/normal_5feb5b9a7454f.pdf
    • https://cdn-cms.f-static.net/uploads/4454277/normal_604fc8653a1d9.pdf
    • https://cdn-cms.f-static.net/uploads/4487663/normal_5fd27b1b72ff5.pdf
    • https://cdn.sqhk.co/suzeboxiwo/eYkjgge/full_screen_whatsapp_status_video_download_2018.pdf
    • https://cdn-cms.f-static.net/uploads/4387814/normal_60433bce564d0.pdf
    • http://nurigoluda.mygamesonline.org/physiology_costanzo.pdf
    • http://dasiwujupuna.sportsontheweb.net/82571332318.pdf
    • http://uplrezina.site/superhero_coloring_pages_for_adults8ko1d.pdf
    • https://static.s123-cdn-static.com/uploads/4454681/normal_5ff0ec3676acd.pdf
    • https://static.s123-cdn-static.com/uploads/4375344/normal_5fcf3ca23bbc5.pdf
    • http://aov.one/kugafoxoxobagabakobijx18wv.pdf
    • http://storeyou.store/vanguardias_artisticasihf57.pdf
    • http://streichpack.online/19158471665631gu.pdf
    • https://cdn-cms.f-static.net/uploads/4404122/normal_5fe8a7634e05d.pdf
    • https://cdn-cms.f-static.net/uploads/4427267/normal_5fe93cb813198.pdf
    • https://cdn.sqhk.co/simumufij/o2agg40/20796791578.pdf
    • http://salebox.shop/mekuxugulifasegalulijo9ctv.pdf
    • http://vizilirudigub.getenjoyment.net/kababejazudulifuv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://japixunatavaxi.rf.gd/how_to_change_a_picture_background_in_paint.pdf
    • http://senesijosezetu.myartsonline.com/low_back_pain_exercises_kaiser.pdf
    • http://rozazidugo.epizy.com/11801181789.pdf
    • http://pawuzax.onlinewebshop.net/battery_types.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_off000101b3.bin
935cd277b44ef01d6fa17e39b43a64ad775383ce50cdd5ece1b39166938a5975
pdf-font-stream PDF embedded font (sfnt) at offset 0x101B3 5972 bytes
font_01_sfnt_off000115f9.bin
3f74cb348adf5f63c231551d2434d4ec5bc01381d878950c772bcd05754fe11b
pdf-font-stream PDF embedded font (sfnt) at offset 0x115F9 12032 bytes