Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f9b34b3b5912de…

MALICIOUS

PDF

105.9 KB Created: 2021-06-07 01:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d321e995e6efb6805f2e3368503da25b SHA-1: c07edbdce25c54da62e2fb5aa52df5247b425d26 SHA-256: 05f9b34b3b5912de10d2f1d6d082fad3cae407c8c719086f3a016b0b9bab3c7c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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/123?utm_term=best+free+bootstrap+templates+admin PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487200/normal_60bd0dbbc3bda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405895/normal_5fdf098dc7f0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445733/normal_603dc412d6ab4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491173/normal_603fa54000275.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367019/normal_600816d93cbbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476580/normal_6000386e58f61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420034/normal_5fc927415330c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458827/normal_5fefe5a82b9d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://figinav.pbworks.com/w/file/fetch/144542130/viktor_e_frankl_insann_anlam_aray.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dab1eaf3-44ea-4a9b-a26d-e169f252b89f/what_is_newtons_law_of_motion.pdfIn PDF document text
    • http://bojirakaj.pbworks.com/w/file/fetch/144751458/zisalovowebidizawutuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af18a37a-9d37-4bc4-b50d-a72212270ec8/86850355951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e2654fe-89e8-459b-a25a-05919b66d0da/98447334843.pdfIn PDF document text
    • http://zopujoxobug.pbworks.com/w/file/fetch/144412188/44123414292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a573bd4-3f1c-41f7-9cfd-e55dec4aadab/how_long_does_it_take_to_get_lung_ct_scan_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3b01627-e2fa-4260-97ae-166dc7e96ce2/suzuki_quadrunner_250_brakes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e39bf2e5-fc90-43b1-8746-955278088f3e/relion_ultra_thin_lancets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd8639ed-866c-4631-a066-019b8ede708f/is_there_a_wii_u_emulator_for_android.pdfIn PDF document text
    • http://nunaruribeg.pbworks.com/f/le_gladiator_anime_dcharger_gratis_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb9d2d2-eea1-46a5-9873-97f0512942e1/goosebumps_series_2000_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79dc17e1-230d-4540-a437-0754b30e38f4/kefirukataw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/462342a7-4c95-43d5-86f9-7b27d3ffb41b/2_ejemplos_de_discurso_directo_e_indirecto.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_off000161fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161FB 5376 bytes
SHA-256: a6609af63c491d77cf154973fd6ebca7ccfbdcaec8037ebb6709bf0685699cf2
font_01_sfnt_off00017428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17428 10864 bytes
SHA-256: 534d75987352e5b32fee9cc4f29b811661cca3ac49d6f4e4a2db245f1d1cc694

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