Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a779e00ca7acb9…

MALICIOUS

PDF

77.8 KB Created: 2021-06-04 06:01:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30fa5fbf9d62900d5091d6e26d3a0a9e SHA-1: a13f29161175c939d0c4dd1fbda1b186ba2d4d0b SHA-256: a0a779e00ca7acb94aafb662fb88ffb5774634956458c1ab5f4897d346c803c0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, likely intended to host or redirect to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body and metadata suggest a lure related to 'bike racing game for android apkpure', which is likely a pretext to encourage download or interaction with the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/123?utm_term=bike+racing+game++for+android+apkpure
    • https://cdn-cms.f-static.net/uploads/4369656/normal_60183028928a7.pdf
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/ganatekiwi.pdf
    • https://zalamozosuk.weebly.com/uploads/1/3/6/0/136089451/9be32e1cd9dd962.pdf
    • https://bomovuzipomu.weebly.com/uploads/1/3/4/8/134866965/4748638.pdf
    • https://cdn-cms.f-static.net/uploads/4482854/normal_60657987ba7b9.pdf
    • https://motuzepiruwilo.weebly.com/uploads/1/3/4/3/134348631/5436318.pdf
    • https://cdn-cms.f-static.net/uploads/4500678/normal_60219a0081d0e.pdf
    • https://titepusigob.weebly.com/uploads/1/3/5/3/135392267/3784656.pdf
    • https://rurujopolobadez.weebly.com/uploads/1/3/4/4/134444805/kanodana-kixavafuro.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0e544f39-f8ef-4e00-adec-dd33947f54b0/34399658478.pdf
    • http://lekipirunezi.pbworks.com/w/file/fetch/144415863/59019903479.pdf
    • http://vulazojab.pbworks.com/w/file/fetch/144545235/reading_comprehension_exercises_with_answers_grade_6.pdf
    • http://mefijunov.pbworks.com/w/file/fetch/144416742/one_punch_man_season_2_netflix_2020.pdf
    • https://uploads.strikinglycdn.com/files/d8b5a72e-e153-4ba1-8d97-c214dd3fbe2f/xokajotitatagedotoj.pdf
    • http://kukepofarit.pbworks.com/w/file/fetch/144589815/buku_matematika_kelas_5.pdf
    • https://uploads.strikinglycdn.com/files/3105af5d-9c64-449d-907f-c090713ea640/83678879365.pdf
    • http://kirozatijawu.pbworks.com/w/file/fetch/144515382/88371865952.pdf
    • http://molitutolu.pbworks.com/f/adobe_creative_cloud_download_stops.pdf
    • http://bofamawetodo.pbworks.com/w/file/fetch/144566859/problemas_de_sistemas_de_ecuaciones_no_lineales_4o_eso.pdf
    • 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_off0000f3b4.bin
acd178be101a664d2a46426c2bd47757cf30ac9b30b5b86bb3a81730876db733
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B4 5376 bytes
font_01_sfnt_off000105f7.bin
2a54544da7813c8bbc093ef17a700b71e1d07a44e2686ec4b6cb5d5e8825945c
pdf-font-stream PDF embedded font (sfnt) at offset 0x105F7 10580 bytes