Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2312b2d1e7d419…

MALICIOUS

PDF

76.4 KB Created: 2021-04-01 18:49:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 9ed85b5dd49047569b07f5422e9d4a42 SHA-1: d307eb7a11f18e44bf548bf3f4e1bb38115cfbc4 SHA-256: ce2312b2d1e7d419510d62fa0efdaacbc326c5117e2981d53d6389e6cb981db4
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that, when visited, likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a landlord tenant agreement template.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=landlord+tenant+agreement+template PDF link annotation
    • https://cdn.sqhk.co/fazejitev/jfPrnHd/artsy_powerpoint_templates_free.pdfIn PDF document text
    • https://cdn.sqhk.co/rureroso/gMKfQod/samsung_level_bluetooth_headphones_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/vidujubotaf/XgjjhJJ/cherry_bakewell_tart_nutritional_information.pdfIn PDF document text
    • https://cdn.sqhk.co/wafavalufa/igjbVBI/disney_wedding_cake_toppers_amazon.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/satuja/new_jnc_hypertension_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/konujegefuzoretekarowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8aae2cc-f677-417d-9f31-4816addf4fa8/historia_geral_o_que_mais_cai_no_enem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5adb7ccf-69ca-4c21-8229-c3df6c9d8819/94827078301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39d28e8d-3cf0-4f05-92ea-c94c9f8214fb/guitar_chords_songs_without_capo.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/octopus_mod_apk_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b06bd640-aa47-4d7f-a6a8-30567a82e48e/gebabevubotozizenet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beb71209-811f-41cb-aafc-24b9ccb99ccc/91811983116.pdfIn PDF document text
    • http://mowiwanafiv.epizy.com/solugolidixuku.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/android_studio_generate_constructor_shortcut.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/dihybrid_genetics_problems_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc93c6f1-9e96-4462-a3d3-9c099a71599e/safeline_metal_detector.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bf59a38-caaa-4b00-b6c7-43d3997890c8/2nd_grade_reading_workbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/443ff37a-f997-48b4-9cc7-3ca28a570a60/what_is_the_best_adjustable_bed.pdfIn PDF document text
    • http://lepiwapugu.rf.gd/92904083613.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_off0000ecec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEC 5040 bytes
SHA-256: de8fbc4fcc1cb0b708120d4bfc974e6006b8f521bd17385ce30f55f848c9e3cd
font_01_sfnt_off0000fdfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFE 10812 bytes
SHA-256: 19d44a270611b775d523d36a1266847e5e94068eeb010715f073473b298ec832

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