Malicious PDF — malware analysis report

Static analysis result for SHA-256 e92be07148e6ed51…

MALICIOUS

PDF

70.1 KB Created: 2021-02-18 01:49:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e68adbb4c9ab330953dd4ebbb3f8a37f SHA-1: 57c7bf5325c19344118829cdaab9b1452b0744ed SHA-256: e92be07148e6ed51c0f070b2dca9e6d2fc276ce8c6ca69a9f11d48a23c1e49d1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily corrupted, contains text related to a medical device, suggesting a lure for phishing or malware distribution. The presence of multiple external URLs, including one that appears to be a tracking or redirect link, further supports this. No scripts were extracted, but the PDF structure itself likely facilitates the redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/strik?utm_term=how+to+turn+off+philips+respironics+alice+night+one PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4464313/normal_60017451eb8f5.pdfIn PDF document text
    • http://static-get.top/tataxuwekudadt31l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5fdbfd0b5dea8.pdfIn PDF document text
    • https://kunewosixur.weebly.com/uploads/1/3/4/3/134393142/jenezujelitojikimu.pdfIn PDF document text
    • http://formverifiedbadge.com/how_to_install_air_canada_rouge_playu5n33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455405/normal_5fdd78761b02a.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/299254418691ykkf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385417/normal_5fda7a74061c3.pdfIn PDF document text
    • http://idealica-italiaofficial.site/wekawejosetanaliveqhapn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452845/normal_6015890b703a0.pdfIn PDF document text
    • https://sitimewodojex.weebly.com/uploads/1/3/1/8/131856527/6717515.pdfIn PDF document text
    • https://nitomono.weebly.com/uploads/1/3/1/4/131454496/tesejasibaj-giwuzifaw-sabopuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446388/normal_5ffad235de0b4.pdfIn PDF document text
    • http://good-production17.site/clasificacion_de_polisacaridospcrrv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474977/normal_5fde67dc8b854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420230/normal_600aae3e3618f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482629/normal_5ff6d05688f67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_6009f5ee8f3d5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gavuzolu.epizy.com/26145815118.pdfIn PDF document text
    • http://logasexa.epizy.com/98101139256.pdfIn PDF document text
    • http://wewefaxekedafoz.epizy.com/20170711943.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_off0000d4c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C0 5332 bytes
SHA-256: 6018c1a291c6e8b53d7021be39f01c1e7512877f68e83c80b4fe39dead98c1f1
font_01_sfnt_off0000e6ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EF 10600 bytes
SHA-256: b70a349bbf8d26bbe4d225c5f931c6d9bc12e093b9e04981dea620cae5527b23

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