Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b47c58084f44d68…

MALICIOUS

PDF

76.1 KB Created: 2021-03-31 11:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2f363ec081c0d4df8c86cf39c2edf65 SHA-1: dd85706ed4d305883650bc1bcfec7c1b9ca72a54 SHA-256: 9b47c58084f44d68426169ad0221e424d262d4f6b6c43331bee0e3041e5ce115
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious URL, which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to 'Runescape safecracking guide'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://druttle.ru/wix?keyword=runescape+safecracking+guide
    • https://cdn-cms.f-static.net/uploads/4417221/normal_602e1d3af3c0a.pdf
    • https://cdn.sqhk.co/pegidago/umlYgdK/sniper_gang_freestyle.pdf
    • https://cdn-cms.f-static.net/uploads/4387921/normal_6028757de3829.pdf
    • https://cdn-cms.f-static.net/uploads/4415326/normal_6030a841e875a.pdf
    • https://cdn.sqhk.co/wefadegese/fiagiid/airtel_digital_tv_recharge_my_family_pack.pdf
    • https://cdn-cms.f-static.net/uploads/4486201/normal_5fd2f4b6ec109.pdf
    • https://cdn.sqhk.co/tutabudoxuwa/ijbkPgj/critical_reasoning_practice_questions_and_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4469626/normal_6026f8b6914c4.pdf
    • http://wazokerifiwe.22web.org/programa_escolar_de_proteccion_civil_2020.pdf
    • https://static.s123-cdn-static.com/uploads/4473064/normal_5fec84963a3fe.pdf
    • https://cdn.sqhk.co/jameleber/hFMiahh/rokuminubawuworeruwesun.pdf
    • https://cdn-cms.f-static.net/uploads/4383582/normal_6016c400c247a.pdf
    • https://cdn.sqhk.co/zebenane/gdgibic/boulangerie_candles_lavender_shortbread.pdf
    • http://xuvaguwanolinu.66ghz.com/do_big_buddy_heaters_have_fans.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://romipozaxijida.rf.gd/andhra_pradesh_state_formation_history.pdf
    • https://uploads.strikinglycdn.com/files/a8676294-117a-41fe-9822-41a280f9760a/oracle_12c_sql_tuning_certification.pdf
    • https://uploads.strikinglycdn.com/files/5c0fea58-7270-4a94-b06b-f0104dea772c/arms_reach_co_sleeper_when_to_stop.pdf
    • https://uploads.strikinglycdn.com/files/3838d6f5-4edf-4297-8669-86958101adca/70092929421.pdf
    • http://dibulazovila.rf.gd/post_office_guide_part_2.pdf
    • https://3d3b31fc-6152-41c7-b1d4-a4af3afcce63.filesusr.com/ugd/3f8d85_f3abc66da1fa48aebdf00b600c4e2623.pdf?index=true
    • https://uploads.strikinglycdn.com/files/01b388f8-6ed6-4d1d-b126-24d46aeddcef/rudesakutan.pdf
    • https://uploads.strikinglycdn.com/files/652757d4-7b2d-4ff6-acc4-b819b14dac1d/correlation_between_gdp_and_standard_of_living.pdf
    • https://05efeaee-ea5b-4dc8-bddc-a5098cc0dcbd.filesusr.com/ugd/c06c30_f9f45dc173664ee191b5b69cf3cf3591.pdf?index=true
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_40784cc5ae8c44a1ad22294b4784bc18.pdf?index=true
    • http://najubizep.epizy.com/dedodifudediwurubumusinuk.pdf
    • https://c2c662fa-00ac-4c69-bf5d-04da7d6c99e2.filesusr.com/ugd/9b33c5_4936b5aca32e4abea2423a6abe4f8a56.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_off0000ead1.bin
5cf6bf4a5656346a7aca8861698112ece7d42d8f86f78a830758cec8b868b7fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD1 5360 bytes
font_01_sfnt_off0000fd2c.bin
5d774d3636138fd8232e22c8d3fe79c44681cbde51abc94ed8ee717276ea3ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2C 11020 bytes

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