Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef20c5baa29aadf2…

MALICIOUS

PDF

78.9 KB Created: 2021-03-08 23:49:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ee3634a83b4e45a6d8c8d96b9508859f SHA-1: 9344154288d107c54a90573f9398ed2be507cce2 SHA-256: ef20c5baa29aadf2328c0cd94cde97552835c21370a435c2605ba0d884dc0734
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/award?keyword=kalender+2020+lengkap+pdf PDF link annotation
    • http://doxisodezezaku.iblogger.org/secadora_maytag_atlantis_manual_en_espaol.pdfIn PDF document text
    • http://fijigud.22web.org/kugepoduxafosox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478946/normal_5fcefb24931eb.pdfIn PDF document text
    • http://kadesevi.iblogger.org/fopogotudi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456676/normal_604497207535f.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
    • https://uploads.strikinglycdn.com/files/e35c4cfd-daac-4a9e-9cdd-aada3fea711b/sulemuxinemetokataxoxejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a80d4941-754c-4f51-be38-12b98e8b35bb/34539494309.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/raees_movie_dialogue_status.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/cartoon_cute_girl_wallpaper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2afa1591-e8fd-4a1d-b28e-dda1c9e4139e/panasonic_kx-tgf382m_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/fenokorobosositetibizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cd6ab15-a625-4b99-89ca-5847bc057efd/70683049453.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/lafuwofimajufiloxonipasan.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/3398840576.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/94452096696.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/gorowemexedokagana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7569290c-4a2d-464c-bd52-e3edcf8e89d4/78514213603.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/what_does_impression_sunrise_mean.pdfIn PDF document text
    • http://nijupilunijar.rf.gd/94198824760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90498a77-d756-4222-906f-457fd759d37e/us_in_latin_america_imperialism.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE505 4888 bytes
SHA-256: 5b31ddb862e3b8e0d4f76eb19dd1af25660ac62c71e4ad8a9b07c812fca089a1
font_01_sfnt_off0000f5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A9 13548 bytes
SHA-256: 9ab4e456b71cc3ede8ad7f448061463127c5ace556555c551100735a6b3e2d95
font_02_sfnt_off0001206b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1206B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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