Malicious PDF — malware analysis report

Static analysis result for SHA-256 4065e1b9d21f5a2a…

MALICIOUS

PDF

77.4 KB Created: 2021-05-22 04:23:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 028c63a4acc9ef4899739ea6a1df4bce SHA-1: 964d4980da6549beb39d9fa0be648f604669b903 SHA-256: 4065e1b9d21f5a2acb4bac7ed689ffa4369eb77b2f089738b68e34d94a5b1a19
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The embedded URL `https://zajinet.ru/strik?utm_term=shootout+at+wadala+full+movie+free+download+1080p` suggests a lure related to downloading a movie, which is a common social engineering tactic. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the idea that the document contains a call-to-action to initiate a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/strik?utm_term=shootout+at+wadala+full+movie+free+download+1080p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405443/normal_60260af53d0d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416490/normal_5fc6a0b841e74.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/zamuriza/fha_guidelines_for_gift_funds_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/bexekofisamodadiw.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/6602428603.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/articles_worksheet_for_grade_5_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/fuwusuwejozebesejonokod.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/wozunanedorolepuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/sumunor.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/how_to_calculate_sales_tax_in_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/advanced_java_swing_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/towapi.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/cartoon_network_live_tv_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/vivupodotofum.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/what_is_the_norse_tree_of_life.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/does_verizon_have_any_iphone_deals_for_existing_customers.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/6406379383.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/nisamumevijof.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/aha_mitral_valve_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/ritinabevonozurune.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/debupikom.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/samsung_m2835dw_wireless_setup_windows_10.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_off0000f02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02E 5744 bytes
SHA-256: 512c2864cfe889d9378dde3b27af5e6b264ba137c5fbd02032b0a29e307f03d3
font_01_sfnt_off000103b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B7 10660 bytes
SHA-256: 483bd2161da23be1b16d7833f6ad70d1803b2d48036ee6b5bd774186fcd1e762

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