Malicious PDF — malware analysis report

Static analysis result for SHA-256 10f26b3d1c5df2b1…

MALICIOUS

PDF

71.1 KB Created: 2021-03-18 16:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea4de7ca248038e9ffbd20896adb9697 SHA-1: b81b9042d93b01da3db89af1b90604ecd5d86395 SHA-256: 10f26b3d1c5df2b19656ef6c1511f4760c8f4a63aec1479e3e6a783e44a6956f
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to 'astrology', which is likely a pretext to encourage users to visit the malicious URL.

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://golowaki.ru/wix?keyword=the+daimon+in+hellenistic+astrology+pdf
    • http://lamakexo.scienceontheweb.net/kaplan_vs_princeton_review_mcat_prep_books.pdf
    • http://sopidemeleket.mygamesonline.org/adonis_golden_ratio_workout.pdf
    • http://zumepaposakuf.scienceontheweb.net/what_are_the_art_courses_in_nigeria.pdf
    • http://jedusajinud.mygamesonline.org/liwif.pdf
    • http://delinapod.mypressonline.com/brisk_air_duo_therm_opt_heat.pdf
    • http://jisetatiloro.scienceontheweb.net/busikuxafuxez.pdf
    • http://easylearning.space/refufupuwozakibulenegadzcf4.pdf
    • http://fewudutizoxom.medianewsonline.com/39963918910.pdf
    • http://fresh-ita.space/drag_racer_gamesgfo6r.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nozuwodapa.epizy.com/kagodoto.pdf
    • http://lawewil.atwebpages.com/43274609961.pdf
    • http://wujagenak.atwebpages.com/all_basic_formulas_of_maths_download.pdf
    • http://menimilerawapo.rf.gd/grade_1_math_symmetry_worksheets.pdf
    • http://vopapokolozanum.rf.gd/40293438996.pdf
    • http://zitilidi.rf.gd/is_abiquiu_lake_open_covid.pdf
    • http://rimebeg.epizy.com/email_template_for_business_inquiry.pdf
    • https://e26dc784-fa46-4601-9f6d-57686faaf216.filesusr.com/ugd/c66525_2a57550cee584439a067db83e3caa9c8.pdf?index=true
    • http://banobozibijur.epizy.com/air_conditioning_system_in_aircraft.pdf
    • https://2a085669-a8dc-40eb-b1d3-71ea9d660f60.filesusr.com/ugd/cafc24_8fdd6963c95a42a78f8c5dbc5d5bb4fa.pdf?index=true
    • https://60ceb029-6f78-4d42-8ea4-15ca08d8077a.filesusr.com/ugd/857e61_f26bc79ec03a455d86f036fb73a49d4c.pdf?index=true
    • https://c6111751-42b6-464f-a8b1-832d492ff999.filesusr.com/ugd/3d0627_09dec39ddc5c4914b6822ec4762be4f9.pdf?index=true
    • 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_off0000d6d1.bin
c5789c05d6b6fa84e903832f863d1cdcaabe694ad9dd738dae26188d228caa85		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D1 5620 bytes
font_01_sfnt_off0000e9c9.bin
2e79e91dc2f4a714c25a7ebae20df503531c1204a339b7a2bee2d305acd23b3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C9 11280 bytes

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