Malicious PDF — malware analysis report

Static analysis result for SHA-256 87220e226547c6c8…

MALICIOUS

PDF

75.8 KB Created: 2021-03-27 20:11:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 056198ede0358e32fffe8c8de960d8fe SHA-1: 12a38b7a700ea85dbb44719a1fb4310113b30ac2 SHA-256: 87220e226547c6c8d75880a70a660b49c01b3860c8a458f8198f5dc90acf0365
96 Risk Score

Malware Insights

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

The file was flagged by ML classifiers and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'druttle.ru', which is likely used to host a malicious payload or redirect to a phishing site. The document body is heavily obfuscated, but the presence of the external URI and the malware detection strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/123?utm_term=chirutha+audio+songs++hd PDF link annotation
    • http://vashastrahovka24.ru/chickadee_dee-dee_song_lyricszcktl.pdfIn PDF document text
    • http://gatorama.fun/tridev_chauhan_banjara_songjqj3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408881/normal_6003eea82a60e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454299/normal_604693525d407.pdfIn PDF document text
    • http://xupenirulavep.iblogger.org/nutrition_information_arby_s_chicken_salad_sandwich.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418167/normal_601816301ee5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455684/normal_5fd9365748479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427509/normal_600d701528f76.pdfIn PDF document text
    • http://podjem2.club/75171431411d10cm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gumetipazotepeb.rf.gd/mito_de_la_caverna_de_platon_resea.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/kamedekitudefonanexapavin.pdfIn PDF document text
    • http://wewiligeva.epizy.com/array_in_java.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/negid.pdfIn PDF document text
    • https://3437305d-a3f4-4f94-9a63-846dd410f5be.filesusr.com/ugd/ffe76b_672234d9494c485e82b7aad6b76858b0.pdf?index=trueIn PDF document text
    • https://696f1bd8-06c3-47a7-a8f7-e83e17ec8d18.filesusr.com/ugd/5ad03d_f1c0e09283d942028a42c11da25f4cf8.pdf?index=trueIn PDF document text
    • https://8d684a1e-4078-49cd-b336-05adf09473b6.filesusr.com/ugd/2b25e8_36ff1c299e8e41b39e3b3ba081366e23.pdf?index=trueIn PDF document text
    • https://4adff18d-dc39-4349-be2c-eeb12737f1cb.filesusr.com/ugd/9117e0_c0066682bd6e44c997c24d4cfc16d074.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/oakland_athletics_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/informe_auditoria_de_sistemas_ejemplo.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/android_tv_app_keyboard.pdfIn PDF document text
    • http://xesunuz.epizy.com/sda_camp_meeting_2020.pdfIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_2324f06aea2141ae9ae24cfe39864d9a.pdf?index=trueIn PDF document text
    • http://gariravufur.epizy.com/android_passwrter_auslesen_app.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE3 4844 bytes
SHA-256: fc8870378f6aadd680c1726d521da799ffa6d17484f9530a93bccc18f0f3008f
font_01_sfnt_off0000ed43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED43 11508 bytes
SHA-256: c48fd58e868b3948f3a2997f0251940765454b827349e753f1bd095f864d7b40
font_02_sfnt_off000113ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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