Malicious PDF — malware analysis report

Static analysis result for SHA-256 300b8e14f6aeb4b0…

MALICIOUS

PDF

83.0 KB Created: 2021-02-16 13:36:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e02a69398b4b5b4c4d5b37710ecc7042 SHA-1: 8275b9825026ddd57624df5f253b3c15304d77c8 SHA-256: 300b8e14f6aeb4b001e1d15d28c71f42f54acdeda4da6c6f1fcb25368dda0eb7
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, with a high risk score. It contains an embedded URL pointing to a suspicious domain, which is likely the primary payload delivery mechanism. The document body, though heavily obfuscated, appears to reference a book title, suggesting a social engineering lure to entice users to click the malicious link.

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://maypoin.ru/strik?utm_term=the+trial+and+death+of+socrates+four+dialogues+by+plato PDF link annotation
    • http://serikanipesemo.iblogger.org/schedule_template_free.pdfIn PDF document text
    • http://greenbike.shop/xureseo5us.pdfIn PDF document text
    • http://devicesprotectionforusers.site/teach_english_online_jobs_from_home_south_africaccul3.pdfIn PDF document text
    • http://b4shop.icu/lorajadusesuzowil1t0mh.pdfIn PDF document text
    • http://fastpysystem.online/pemobuzizugapewekh0qq8.pdfIn PDF document text
    • https://natapoja.weebly.com/uploads/1/3/0/8/130813782/561a19849.pdfIn PDF document text
    • https://molobaguzali.weebly.com/uploads/1/3/0/7/130739923/7445152.pdfIn PDF document text
    • https://pusiruse.weebly.com/uploads/1/3/4/7/134717846/kujerebeku-fojizexo.pdfIn PDF document text
    • http://muwawukiseka.iblogger.org/76937567913.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/pulavokaxe/zelevowiporawidizoba.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/filexukitoze.pdfIn PDF document text
    • http://tuxefefili.epizy.com/55191954982.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/balloon_tamil_film_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/akira_movie_kannada_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/bhaiyyaji_superhit_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/final_fantasy_tactics_poaching_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/treasure_island_novel_guide.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_off0001070a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070A 5608 bytes
SHA-256: 064dfd31db90458b5d6417e0e12416bf4547a89441571268c696adee2fae0d4f
font_01_sfnt_off00011a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A15 10616 bytes
SHA-256: a433723598f4369dc6a420ad2109dd8c2711dfd7912499be03af4e6e2dea79fc

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