Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33e8d84cb2b9e42…

MALICIOUS

PDF

73.2 KB Created: 2021-06-04 03:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: aadd6002ed4d459818f96272a78e256c SHA-1: 59812a7be24df670e113e4d584ee0015cfe5b49d SHA-256: e33e8d84cb2b9e4295c0ad66304d6de8065cdab4188f0776114b1ff6886df7a1
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 0.9996

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://smidgel.ru/pbw?utm_term=disable+low+battery+warning+on+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453142/normal_60141a44522d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427284/normal_604846c1d8718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485705/normal_604ccd1b992a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367921/normal_5fce7ada5ce2f.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4474192/normal_60b63a8b0d3e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415073/normal_5fd18df1c69f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469106/normal_60511b9ba7fa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488335/normal_601e8a28b9008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_605d926869f32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391315/normal_5fcb7920b163d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375694/normal_5fcaef35d0545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415937/normal_602f88d39cca7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_6027dfe477b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_601de7cb47990.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369794/normal_5fe41bc885945.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374002/normal_606d5dd63740d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffb08114-c5cc-4f8f-a007-990c2589327f/78550486313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a6bd32a-6b74-4632-ba80-9ed1267a3904/how_do_i_black_out_text_in_a_nuance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed12687-b018-428d-bf53-998c31e54eba/zilujimulada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1f9b269-4122-4868-9fb7-503cc1920613/download_crack_renee_undeleter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d934a1e4-5939-47f9-bf28-d31fc34a7362/how_to_use_glass_pen_and_ink.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d9c7fe5-3b1e-491b-96c0-c1e45e071bbf/sofupusizufovewob.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_off0000e10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10B 5324 bytes
SHA-256: eca3bee3fc32ad0889955c438f97e80af27ec74b9f01e0c67575fbda8b491f48
font_01_sfnt_off0000f34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34E 10564 bytes
SHA-256: 0abb43e01e69161a6d246f091ccc6abe38a50747d34efd98b9ceac3f17bbb1ac

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