Malicious PDF — malware analysis report

Static analysis result for SHA-256 df65907d20a7b834…

MALICIOUS

PDF

92.5 KB Created: 2021-05-15 03:47:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 0d8df0d2dcf19bfa31585344a654d192 SHA-1: 25ddff21b2a276ade8d94a392dc2e38b5fcd899e SHA-256: df65907d20a7b834a08899eec9d3407e54bfb59e7cb77707b032f2aca1d93b41
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with one specifically pointing to a URL that appears to be part of a link farm designed to distribute malicious content. The document body, though heavily obfuscated, suggests a lure related to 'Julius Caesar act 2 scene 1 rhetorical analysis', likely to trick users into clicking the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=julius+caesar+act+2+scene+1+rhetorical+analysis PDF link annotation
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/7722024.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoroxur/jjR7Dia/xebojovepotezigarokutelaf.pdfIn PDF document text
    • http://suwefazimim.medianewsonline.com/xilijujizatuze.pdfIn PDF document text
    • https://gilawidukawopux.weebly.com/uploads/1/3/2/7/132741225/602bd2bed52bf7e.pdfIn PDF document text
    • http://tufinanegonaj.medianewsonline.com/gonofixulasuvurarokoja.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/ijqih6g/78268351710.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/dgfjaie/21333455183.pdfIn PDF document text
    • https://mumasibomogavap.weebly.com/uploads/1/3/1/0/131070301/4abe3.pdfIn PDF document text
    • https://cdn.sqhk.co/sixaxetexaxe/hdDhihd/vufesonigal.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/soluvozafakul.pdfIn PDF document text
    • http://neridofufuleteg.scienceontheweb.net/cash_flow_statement_format.pdfIn PDF document text
    • https://cdn.sqhk.co/rogevuzazi/dhagc5i/adventure_waterpark_subic_metrodeal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://68a74d12-89ac-4a94-b826-09ad332a30bf.filesusr.com/ugd/1a0392_bd63c896849c49699330dd3fbe4852fc.pdf?index=trueIn PDF document text
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_54eb8cb076274df2a3a475000920a77f.pdf?index=trueIn PDF document text
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_5308f4f6925c44c0a45e7934c90a3ccd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/data_analysis_toolpak_excel_2008_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/2048_game_hack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/nomenclature_of_alkenes.pdfIn PDF document text
    • http://wepunulirepobi.myartsonline.com/47569165703.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/libro_tu_puedes_sanar_tu_vida_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/blender_video_editing_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/what_is_the_best_castor_oil_to_drink.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/amended_complaint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/gratis_antivirus_voor_android_tablet.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_off000129f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F0 5160 bytes
SHA-256: 922568275f75c9f933ce5425bd0294b752838b1d428d2b005a10489a5fa3a886
font_01_sfnt_off00013b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B82 11964 bytes
SHA-256: d044e6ab734cfda1c1a55fd2723fa0d7ad84872d9494387959841c5da9e71b5b

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