Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4cc7eb1034d83da…

MALICIOUS

PDF

71.5 KB Created: 2021-02-16 10:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bc122dd289bc8d5c84376649858a2e48 SHA-1: cdc5c766a1de445c4e2e2107c9c3f3a195d8c890 SHA-256: f4cc7eb1034d83da0fae0f35aca4455c77c9dac49b5f1a8f9dea20597d7b27ca
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a phishing site. The document body, though heavily obfuscated, suggests a lure related to an exam date. The presence of multiple suspicious URLs and a high ML classifier score strongly indicate malicious intent, likely for phishing or malware distribution.

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://baarspo.ru/strik?utm_term=ap+english+literature+and+composition+test+date+2020 PDF link annotation
    • http://dimax-matrasy.ru/basic_math_formulas7fdgw.pdfIn PDF document text
    • http://vulgargirls.fun/67330290849jz779.pdfIn PDF document text
    • http://zizaburixakog.iblogger.org/minecraft_creeper_coloring_sheets.pdfIn PDF document text
    • http://theandyhong.com/37807863677695ld.pdfIn PDF document text
    • http://pegizovi.iblogger.org/ejercicios_clases_de_sustantivos_5_primaria.pdfIn PDF document text
    • http://getodupelipod.iblogger.org/jufosiximow.pdfIn PDF document text
    • http://tizakeguwowil.22web.org/lagu_bts_idol_album.pdfIn PDF document text
    • http://rusakova.space/sujuxalisugeneoywr.pdfIn PDF document text
    • http://obschee.xyz/merge_dragons_bunny_event8ogp4.pdfIn PDF document text
    • http://gnatural.space/6429195700f4mx.pdfIn PDF document text
    • http://rabisoluvilava.iblogger.org/brawl_stars_hack_mod_apk_online.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/xefezesebusu/88275112111.pdfIn PDF document text
    • http://varoniwarovez.rf.gd/pininonoxav.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/63220923858.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/2018_acc_aha_cholesterol_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/39674724891.pdfIn PDF document text
    • http://tagafutufuj.rf.gd/dotisezo.pdfIn PDF document text
    • http://bewebumaxof.epizy.com/bamboo_wacom_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/blank_timeline_template_word.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_off0000da7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7F 5752 bytes
SHA-256: 864f8302eed55a7f866324edcb8e8df17e4f515929a5a179ecf94f378d326145
font_01_sfnt_off0000edee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEE 10092 bytes
SHA-256: 5c594cb8fbe9f35c6bcb1b8244aefe6c73e136eff56fad699832e491ae76b3a0

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