Malicious PDF — malware analysis report

Static analysis result for SHA-256 372f1f56b049d83a…

MALICIOUS

PDF

79.1 KB Created: 2021-01-23 00:00:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e19014320b97f0f47ad1418be1aff101 SHA-1: 5954e3c86d32a888ffc649355928505a64364246 SHA-256: 372f1f56b049d83af9d7c86ede57fdc7457e2ea532eeda7b05170065a361f9de
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, suggesting it's designed to redirect users to a potentially harmful site. The document body is heavily obfuscated, but the presence of embedded URLs and the overall detection by security tools strongly suggest a phishing or malware distribution attempt.

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://jacksth.ru/aws?utm_term=parse+json+android+gson PDF link annotation
    • https://site-1217043.mozfiles.com/files/1217043/midalufolonenirumoni.pdfIn PDF document text
    • https://site-1233605.mozfiles.com/files/1233605/crystal_report_2013_full_crack.pdfIn PDF document text
    • http://legivupipofu.66ghz.com/past_and_present_tense_test.pdfIn PDF document text
    • http://salejozokaboruz.22web.org/anonytun_mod_2019_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426423/normal_5ffa86c31fac4.pdfIn PDF document text
    • https://site-1179105.mozfiles.com/files/1179105/2751918379.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415740/normal_5fe269fa6911e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503584/normal_5fe987bbc89bf.pdfIn PDF document text
    • http://zegevuk.22web.org/garnier_charcoal_mask_sheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379219/normal_5fefcae2639c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5fdaaf1e84ed3.pdfIn PDF document text
    • http://dutebolidetol.iblogger.org/67843982703.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502175/normal_5ff6933221051.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451737/normal_6005d6550f6bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sejigesenevemi.epizy.com/guitar_theory_for_dummies_cheat_sheet.pdfIn PDF document text
    • http://ruvesigokusi.epizy.com/nifaj.pdfIn PDF document text
    • http://jipinasin.epizy.com/lg_c9_oled_tv_manual.pdfIn PDF document text
    • http://relilirijupike.epizy.com/90050577621.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_off0000efe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE3 5040 bytes
SHA-256: f96098991d8d53bbf3661b7e6ce255152aa1eef7a8dbc630e3ba890e91ed676a
font_01_sfnt_off00010115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10115 14084 bytes
SHA-256: fa53a8e7104a7c5b74d0654632647b707f3e2cd1cd9dc91e016027a9f18a31ca

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