Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ea3c2fa162589c…

MALICIOUS

PDF

79.0 KB Created: 2021-04-07 14:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 856bb9f18833ba7d25b59673970896ab SHA-1: dc06719de9074c16fcce6eb52c0adffbdf0d9fcb SHA-256: 65ea3c2fa162589c79793342434ead2e951c1b61b309c27c28ad3c4ae6887aab
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body and embedded URLs suggest a lure to download a font, which is a common tactic for phishing or distributing further malware. No scripts were extracted, but the presence of external URIs points to a potential download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://lozipotod.ru/123?utm_term=bauhaus+std+bold+font+free
    • http://xrootunited.com/35412166190gi4ao.pdf
    • https://cdn.sqhk.co/jawosuzexe/gjhwhgP/causes_of_food_contamination.pdf
    • https://cdn.sqhk.co/fewoxenovof/he6TVhb/jivemisurodezule.pdf
    • http://zeropium.com/nakezivizuzerabetisimujjhuw.pdf
    • http://qrettalq.online/396767149240qqj6.pdf
    • http://mamajan.space/3ds_max_vray_scene_free_downloadyhzxl.pdf
    • http://particulieres-societegenerale.best/how_to_write_a_critical_book_review5f0hp.pdf
    • http://wwbook.org/wotidifr2gb.pdf
    • http://cabinetsly.xyz/horton_hears_a_who_book_online_freee6nmu.pdf
    • http://wijasagasipode.getenjoyment.net/henry_morris_study_bible_imitation_leather.pdf
    • http://sumapewub.getenjoyment.net/salin.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • https://cdn.sqhk.co/mevazasid/ehbnaha/wisepay_hampton_college.pdf
    • https://cdn.sqhk.co/ninevowa/jifpjjf/building_maintenance_checklist_template_excel.pdf
    • http://mumolazesinidix.getenjoyment.net/how_to_grow_an_herb_garden_in_florida.pdf
    • http://wordsidepost.top/13590667333c5tf0.pdf
    • https://cdn.sqhk.co/gazamara/digjfUe/rilujazunamadizezu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dudogiv.rf.gd/mibipujivakewekel.pdf
    • https://s3.amazonaws.com/genedonapubefe/rulimepadi.pdf
    • https://s3.amazonaws.com/votuweroxigezog/how_to_write_language_skills_in_cv.pdf
    • http://lurozakilaxa.rf.gd/20125905909.pdf
    • https://s3.amazonaws.com/legesiliv/21st_birthday_invitation_templates_word.pdf
    • http://pefogitoveni.epizy.com/jorge_bucay_cuentos_para_pensar_amor.pdf
    • https://s3.amazonaws.com/zuwosil/vomuganobonavujijip.pdf
    • http://fujaled.epizy.com/jiva_ayurveda_diet_chart.pdf
    • https://s3.amazonaws.com/zetubakuz/47418686128.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de7c.bin
ff1346a718ba3994d383aabee6c31bf23bb35b3c9dfe976a33630ae057576938		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7C 5184 bytes
font_01_sfnt_off0000f011.bin
dabc8638d6143b2bf52d4daf94b10a3bac1d29d6f66e02e54d2a8b8833492f5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF011 12128 bytes
font_02_sfnt_off000119ac.bin
a3b8ae6cb61a975f1aaa3bdf1d75290c2750726bc6c8d8b6ec62e4e9f5cc9978		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119AC 16084 bytes

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