Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7bc02a7c6c5ff5…

MALICIOUS

PDF

81.5 KB Created: 2021-03-22 03:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 9278227ed13d71f0795876eb390c689e SHA-1: ec8a3b2cc87141384d828ecffda0db8344fa26f4 SHA-256: fe7bc02a7c6c5ff584ddf338fe19bb1eaf7f2f6099786bdda98432f604a94a70
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 directs users to a suspicious domain, likely as part of a phishing or credential harvesting scheme. The document body, though heavily obfuscated, appears to contain keywords related to the embedded URL, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/wix?keyword=southeast+region+of+brazil PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460457/normal_5feb46426933e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480170/normal_600c8bcac1ac4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462075/normal_5ff771d2dab04.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/zih6Ohh/degotivukope.pdfIn PDF document text
    • https://cdn.sqhk.co/fibadivubir/hedgfig/admission_nursery_question_answer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456663/normal_60352ea0db641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387808/normal_603faf17efa5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408599/normal_60129c3e9b79e.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/wdhdvEQ/century_21_closing_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/ijgdigv/diesel_trucks_mudding_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/MhigcDJ/44992095602.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462678/normal_6004a0cfeb907.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454544/normal_603633fb3e44d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467285/normal_5fe2152101a83.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/juzewojavomofew/sql_server_report_builder_count_distinct.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a284eee1-b20a-48a5-8dae-39b1f66c08e3/26917267420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7044b600-d1b4-4ec3-8608-6b442eec888a/ejemplo_de_minutas_en_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/free_affidavit_template_ontario.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c07e14e-fc7e-42bf-a05d-13ebf4539782/quadratic_equation_problems_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/lapilaxew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66588a7f-8dd3-40cf-8a65-507bb510ca99/el_pollo_loco_keto_taco_shell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/876ab546-96f2-4372-97d6-18d4f38653d7/27496934189.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_off0000fd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD80 5320 bytes
SHA-256: 72cd7047908f35588683abbc4f6ffb3f07fa87ec9c9b889c6bce9dea6a8e7a1f
font_01_sfnt_off00010f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9B 11684 bytes
SHA-256: 993af0931fefb573500049fb2f5fc891b741935ae57037879359687287ba2202

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