Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ee2a3a288d3be8…

MALICIOUS

PDF

71.9 KB Created: 2021-06-13 06:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: caa3566695090d5b3e339a8edf1d540a SHA-1: 5072ed65658beace5867d523973d6fe3b778e695 SHA-256: 34ee2a3a288d3be8036dbcca3d32564500f26f355679f3398d9fa6ca300ce46e
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan. It contains a large number of external links, many pointing to PDF files hosted on various platforms, suggesting a link farm or redirection mechanism. The primary external URI, 'https://oniceh.ru/pbw?utm_term=ark+adobe+base', likely serves as the initial lure or entry point for this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://oniceh.ru/pbw?utm_term=ark+adobe+base PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496605/normal_600897b5c7ebe.pdfIn PDF document text
    • https://dasewukux.weebly.com/uploads/1/3/5/9/135956745/3ca6a.pdfIn PDF document text
    • https://jitosagar.weebly.com/uploads/1/3/4/3/134318128/laworodutasutuvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_60405c363a917.pdfIn PDF document text
    • https://vabirixeg.weebly.com/uploads/1/3/7/5/137500439/3029876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416790/normal_60c4290df1c5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403680/normal_5ffe8f3cb761b.pdfIn PDF document text
    • https://jotabaputeja.weebly.com/uploads/1/3/5/3/135350690/nukem_kavawuxafuwadin_puwetoxaporap_sujujubufof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377391/normal_605f4c787c07a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500895/normal_6058c47590e6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427094/normal_6066fdfb94805.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366652/normal_6000e466c69c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491925/normal_600b39b668b09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422180/normal_606d2a00bac2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_60195b5f710ed.pdfIn PDF document text
    • https://tijezelaxupoki.weebly.com/uploads/1/3/5/3/135340387/sinelugimafe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445557/normal_604d8e4d466c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368736/normal_6006aa9e5df53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465548/normal_5fd98d6d40791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_60312fa75e0ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476756/normal_5fd3984669e3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_6028418960488.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD407 4532 bytes
SHA-256: 1d577e9e881f72e855af9a26480229e85e38df4551b94d6c9d01f31480e37596
font_01_sfnt_off0000e369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE369 9640 bytes
SHA-256: ce116f02c7724a581e20a0a59cf31b751b03512732669844dff82bdb92edb47b
font_02_sfnt_off00010463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10463 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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