Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b45eba946a2bb27…

MALICIOUS

PDF

64.4 KB Created: 2021-02-26 05:29:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 00c5bd93d3fd6b74613055d849a213f3 SHA-1: e797df97f58cafa99db48c36d01489dc274122ad SHA-256: 3b45eba946a2bb2766b98a2ac6f87577a0f3a22b7ca9a4a6e9865ac5b24dbaef
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are to PDF files, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a phishing or malware distribution scheme.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wb?keyword=phet%20lab%20states%20of%20matter%20worksheet%20answers PDF link annotation
    • http://vannabanyavsedela.xyz/free_chinese_checkers_board_gamel5vkj.pdfIn PDF document text
    • http://normal-id.com/81185277205lmklj.pdfIn PDF document text
    • http://ses-paypal.com/alan_watts_overthinker_lyricsj0y8w.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutowede/HGgeggf/zowedasazonadatuzagupi.pdfIn PDF document text
    • https://cdn.sqhk.co/loberutebe/HnRjaje/wifovuv.pdfIn PDF document text
    • https://cdn.sqhk.co/wituruxa/80hgzJv/robot_shark_game_mod_apk_download.pdfIn PDF document text
    • https://jufukakoxojopop.weebly.com/uploads/1/3/4/3/134317893/bunakutoviz_lunakoxemov_kapes_nowojajam.pdfIn PDF document text
    • https://cdn.sqhk.co/sozovoja/Viijhid/77743997697.pdfIn PDF document text
    • https://cdn.sqhk.co/vikafaselida/dZghrnz/specific_pathogen_free_meaning_in_telugu.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/PLgdaig/leluwekojukatixedefurug.pdfIn PDF document text
    • https://cdn.sqhk.co/vivakawibaki/bhfhbgd/17373459729.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/feborobegibew/lovum.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/69648949665.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_off0000c00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC00E 5304 bytes
SHA-256: b58c2046e0865ce0af13bde42c0a9dce6ad95e834bf673dcec180d8b9d998de9
font_01_sfnt_off0000d200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD200 10152 bytes
SHA-256: f1c3053703c668bf71de2f03d1be57d2108b828a5fc3fecd96170da5b015f75e

Open this report in the interactive analyzer, or submit your own file for analysis.