Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6545dd21bc1c038…

MALICIOUS

PDF

83.0 KB Created: 2021-05-22 03:09:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b9c8c8be4c7113cdc3a296eb2294060b SHA-1: f5bc1e68b2b29036a0e287207b4e9e2bd50b998a SHA-256: e6545dd21bc1c038b4a8ed69258021da7a0c231fb5bad267c85fed39715d2cf2
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. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references that align with the embedded URI, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://baarspo.ru/strik?utm_term=strongs+concordance+1111 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370088/normal_606a9e52d0de3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387241/normal_6010c09562e9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381291/normal_600dfa865f157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489596/normal_605b8c8338343.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475872/normal_602eee0cc78ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366020/normal_5fded3baacb99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_5fe83ec79005f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459060/normal_600762dc6a4ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450251/normal_6047d04a97e88.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pilazi/football_quiz_answers_robux.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/26420696683.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4173963e-b39b-4e9f-8e42-b1984328cfc0/driver_de_impresora_hp_deskjet_f4480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b070d49-a87a-41b7-869f-5ffa8ec6f98e/philips_respironics_bipap_autosv_advanced-system_one_with_humidifier.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/pugodu.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/badger_900-1_garbage_disposal_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e336fdb-a978-4211-a8cb-845de6eb56f8/juwexefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a1f40c2-a287-4e69-82e4-14d79e8bc162/what_jobs_are_related_to_nutrition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1a204d3-fe1b-4ae6-9ee6-fe19f4f7393f/irregular_verbs_infinitive_past_simple_past_participle_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/gafejenemami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/400e35ac-22ad-4fa0-b2e1-d83af866ca53/14600188526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae37a576-214a-48bb-95ab-df995c708bb1/xijusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83a7bf90-a033-4d93-a146-52ce5c8fccbb/how_do_i_write_a_restaurant_review_on_tripadvisor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66153405-596e-4bc4-b0c1-231e82e2866b/ccnp_route_exam_topics.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/gumuku.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD7 5228 bytes
SHA-256: e30e0451c6ee015011e6478892b8b5bc05dc2056b18d8354a6ab356d331cf02f
font_01_sfnt_off00010db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB0 15976 bytes
SHA-256: c65fa21ce0f67d5f11290adb42d95957cb96192587e39c8f515af8a673ffe2d3

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