Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2d5f8f9e507a05…

MALICIOUS

PDF

67.1 KB Created: 2021-02-15 17:31:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: cfcb207c3534c60f9a250359df9d81c1 SHA-1: bc498c6bdc9ad9c3ee47d244de5f4fb1eb1a573d SHA-256: ad2d5f8f9e507a05cdfe7a0402e74ff27f3d0e96540c97d0e58c98920b22e10f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that mimics a search result, likely intended to trick the user into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=poem+about+soldiers+death PDF link annotation
    • https://cdn.sqhk.co/nisifowisom/Rjgjjjb/42787212360.pdfIn PDF document text
    • http://wavarev.22web.org/cord_to_connect_android_to_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/hgiimja/alien_swarm_reactive_drop_guide.pdfIn PDF document text
    • http://housefashion.ru/annabelle_s_homework_piano_sheet_musicmbsow.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/ABYxKhe/among_us_free_skins_download_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/KyMmCih/fugududopekevevarunivira.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/iaLghhc/38658016701.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xakafof.rf.gd/12193750582.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/gta_vice_city_cheats_android.pdfIn PDF document text
    • http://mevedokepovi.epizy.com/realidades_2_capitulo_1b_answers_page_18.pdfIn PDF document text
    • http://rarobijeriv.rf.gd/wopeluw.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_off0000cc58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC58 5208 bytes
SHA-256: cb6e1237f99e045ab002c04a42180517fb5f802c3344be1cd4cbf131e1ab7449
font_01_sfnt_off0000ddd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD0 10032 bytes
SHA-256: 30713be4d158ee74effa9b38b15d474a17d1c6e28c95e11c793ea26066768383

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