Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea90eb45e60e546…

MALICIOUS

PDF

79.3 KB Created: 2021-05-20 17:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 6f661413d1d9b281de195ab3b7751a45 SHA-1: 3fdcdc539d233b4d0d6de23bc4b01770639bd9c0 SHA-256: aea90eb45e60e5463e1a892ef46ca1b72e3cc86a0405fcaff03fbc9ac32d9691
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or redirection mechanism. The primary URL, https://soxebez.ru/strik, is likely used to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/strik?utm_term=professor+messer+security+plus+study+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471960/normal_60290be546ccb.pdfIn PDF document text
    • https://nogusuxewi.weebly.com/uploads/1/3/1/4/131438155/toziwiwaba.pdfIn PDF document text
    • https://wobanavemo.weebly.com/uploads/1/3/4/0/134096337/subiwunenawujesiz.pdfIn PDF document text
    • https://jadilibetaz.weebly.com/uploads/1/3/4/8/134871175/dusefuwuvekera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_605690cd15421.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414847/normal_5fe4541e378f2.pdfIn PDF document text
    • https://mozufakumijisa.weebly.com/uploads/1/3/5/3/135333945/2255454.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/9483471.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5fd70b5168999.pdfIn PDF document text
    • https://gegiwozik.weebly.com/uploads/1/3/4/7/134719936/7286689.pdfIn PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/6839176.pdfIn PDF document text
    • https://nanowoduz.weebly.com/uploads/1/3/1/4/131414019/vimomewojekusogipa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447916/normal_602631bc5ce03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387586/normal_60481bf665064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_603282c51ee06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384831/normal_5fdba4b505083.pdfIn PDF document text
    • https://tefeteti.weebly.com/uploads/1/3/0/9/130969297/63192d8e44308.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/annual_information_awareness_training_army_certificate.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/html_css_javascript_projects_for_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/ekonomiks_9_teachers_guide_yunit_2.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/74695419845.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/father_kelly_s_reel_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/battery_saver_pro_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/assessment_monitoring_and_evaluation.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/spider_man_1994_animated_series.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_off0000f645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF645 5368 bytes
SHA-256: 5913d1bc2fbec0d5a7fa7baaf94e74d29330549e0132d5e377aad0100605706c
font_01_sfnt_off00010881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10881 11424 bytes
SHA-256: 960537f355e0b3ccbc747c5d7b43a51df4e7653e4f6277f0680bccf731358b61

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