Malicious PDF — malware analysis report

Static analysis result for SHA-256 0413e88b4bf9c4de…

MALICIOUS

PDF

89.2 KB Created: 2021-02-26 19:08:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c7b2075b9e590a22d28b67dfcc348148 SHA-1: af9e6c466ecc2c9e9170454f14bcbe25bf3f4988 SHA-256: 0413e88b4bf9c4de25ba83699c282b4e4c148db454dcaf76b54bfbc3d26083dd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. The document body, though heavily obfuscated, contains text related to 'Navy instruction on maternity leave', suggesting a lure. The presence of external URIs and the ML classifier's high confidence score indicate malicious intent, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/award?keyword=navy+instruction+on+maternity+leave PDF link annotation
    • http://muvajopumo.22web.org/infomercial_template_videohive.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/NFgfghf/.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/ja4Dkgd/lighthouse_movie_poster_2019.pdfIn PDF document text
    • http://lapitubemexidi.mywebcommunity.org/22025493121.pdfIn PDF document text
    • http://kernig.online/california_dmv_real_id_application_form0eghm.pdfIn PDF document text
    • https://bajusokizuz.weebly.com/uploads/1/3/4/4/134400974/21cdb.pdfIn PDF document text
    • https://cdn.sqhk.co/satasevubu/haXhjeN/clue_game_rules_2015.pdfIn PDF document text
    • http://sdfafq.info/82860573567ovilm.pdfIn PDF document text
    • https://cdn.sqhk.co/lewonuvaxu/Iidjgjc/chanaga_pappu_curry_in_telugu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fixelelediv.epizy.com/facts_and_figures_1_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/ansible_copy_or_template.pdfIn PDF document text
    • http://lekozuni.epizy.com/jalugimixavawovap.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/xusubu.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/conjunctions_and_but_or_because_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/23574687930.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/what_is_hardware_short_definition.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF042 4956 bytes
SHA-256: becf0ee3e9833f6b5e7e1385290e10756c478cb06f5272a53a46b904a369d39b
font_01_sfnt_off00010104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10104 2192 bytes
SHA-256: e3f3a55895bd16912a6eeba4cf2d96c6de995318a9a6926762953235f948a7f3
font_02_sfnt_off00010b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B17 12068 bytes
SHA-256: f4e13e4af7b16bfd92b2a19ab26921dea6b634b31f2d243ad6a619bf454a72da
font_03_sfnt_off0001325d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1325D 16488 bytes
SHA-256: a5523e5241db11b37fd1b813b316ed46bd8249bbb1e2928a681742f7967ad824
font_04_sfnt_off00014877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14877 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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