Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb52a3661cb972f8…

MALICIOUS

PDF

203.1 KB Created: 2021-02-22 08:29:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2de2a7ee78a975e0a96685d0b6fe1a62 SHA-1: 625d953e899080a291a031d50939153f01ca972a SHA-256: eb52a3661cb972f8899a68df1098746729aa57899926f5e235c5dc625052140c
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7228

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=who+covid+19+update+all+countries PDF link annotation
    • https://cdn.sqhk.co/wojipezusax/bjdhdjc/tozikop.pdfIn PDF document text
    • http://geekcods.com/avid_critical_reading_deep_reading_strategies_for_expository_texts1gyw8.pdfIn PDF document text
    • http://hookup157.site/senha_de_wifi_da_igreja_sudbcv3p.pdfIn PDF document text
    • https://cdn.sqhk.co/dutimapo/ahji2WN/cara_isi_pulsa_online_gratis.pdfIn PDF document text
    • http://ionatr.space/29730755059h16w3.pdfIn PDF document text
    • https://cdn.sqhk.co/bexoninodag/VijKihk/bazuwizutesefi.pdfIn PDF document text
    • http://arenda-comp.space/missing_you_lyrics_brandy5gx8c.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/third_grade_learning_games_apk7j62u.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/0pzHjg0/motor_world_car_factory_breeding_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/ticXiib/xadulep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jeromopelurab/metallic_bonding_properties_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/67809134287.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/kugexejikijevipotosulur.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/eulogy_templates_for_brother.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/el_alquimista_paulo_coelho_ingles.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
    • http://www.geocities.com/dnhhngIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001e968.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1E968 19236 bytes
SHA-256: 8e7cbc5013d14ad58b943f8f4860a3e374ec56c528a433508eaed5310167eaec
stream_011_off0002ca63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CA63 32468 bytes
SHA-256: 57b8d1354793ee203ec9e0d39b9108c4d0c1a34d57b4663a1446d6ffe4d097e8
font_00_sfnt_off0001d9cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D9CC 6408 bytes
SHA-256: dbae57d602991b9716a6821abe8aeaaf8e369c2c93c917f44b111f2e2764e40f
font_02_sfnt_off000226b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x226B4 5324 bytes
SHA-256: 65d0f644e159a7fe72a1b41479b1860016785840c95a8e94b0d41d8c9e9149e5
font_03_sfnt_off000238ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x238CA 8272 bytes
SHA-256: 775615f8ae186458d9ec55dafdb4ec9628b792f5866ee6c5d7cb7ca1e55905f9
font_04_sfnt_off00025292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25292 7048 bytes
SHA-256: da1c7d19b4b9a84ae9d1fbe88dab15d011cc0c385146c1e3ee7c4d7a735c4427
font_05_sfnt_off00026705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26705 7816 bytes
SHA-256: 069da884cc587eef9493991faafb63228b99cd7cfc3c772a3c22e9f68c050164
font_06_sfnt_off00027ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27CA0 28024 bytes
SHA-256: 03cff44f252ec6693073559687b20f1073f22edddcc4bda40967834fbf160046
font_08_sfnt_off00030baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BAF 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f