Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6137fd9fbc1fb9b…

MALICIOUS

PDF

73.4 KB Created: 2021-02-20 21:47:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4874b2e9d04c3adc93c9aa2bca24c887 SHA-1: d1cea8d057cbed9db48c56e0074e0bf06136a930 SHA-256: e6137fd9fbc1fb9bb422abfa2751a9ad8933785049ec246e54a96175ad402676
96 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'jacksth.ru', which is likely used to deliver a secondary payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'how to put multiple quotes in a sentence', which is a common tactic for phishing or social engineering.

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://jacksth.ru/strik?utm_term=how+to+put+multiple+quotes+in+a+sentence
    • https://cdn.sqhk.co/ditutafewaw/h6ICwhe/roguelike_dungeon_crawler_ps4.pdf
    • http://itnegozio.info/explicaciones_del_himno_nacional_de_honduras_letraqd1sk.pdf
    • http://whitetwo.space/ansible_template_absolute_pathgqj1s.pdf
    • https://cdn-cms.f-static.net/uploads/4465924/normal_5fe7f7235a199.pdf
    • https://cdn.sqhk.co/zaviresodew/jbf8phd/webnovel_free_coins_hack.pdf
    • http://itawegan.space/19587266339tq4b7.pdf
    • http://matroskin.space/magazine_cover_template_microsoft_publishernlj80.pdf
    • https://cdn.sqhk.co/vegubefeno/fih5T9v/terujumaxinajupevuzikomaz.pdf
    • http://goproits.com/gemakarupugim205d6.pdf
    • https://cdn.sqhk.co/goxobuve/dgfSdhg/name_creator_pubg_pro_apk.pdf
    • http://nekretnine.site/sky_force_2014_mod_apk_android_1h1job.pdf
    • https://cdn.sqhk.co/xipepovivik/gigh0hg/all_creatures_great_and_small_book_age_appropriate.pdf
    • https://cdn.sqhk.co/niserutom/VghBjhr/xopavosuvogo.pdf
    • https://cdn.sqhk.co/wuvitatutuv/ggQt2Yx/547152187.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/piwupevivotixi/glossaries_worksheets_for_year_1.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e106.bin
213c8f8ff045e0145077583e6877d7a4d26f80902d1fe9ad37781c15daaafe1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE106 5164 bytes
font_01_sfnt_off0000f29b.bin
0bedf99f04dcde1d0d60e1c61a0cc345edbab3422e02186974c0181c8395f19a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF29B 11200 bytes

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