Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc8cd325dee17d3b…

MALICIOUS

PDF

120.0 KB Created: 2021-02-06 09:38:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 53c6eee823560923ca22afdb1c4b2a08 SHA-1: 8ecc033806208eacba556ced1969bc093572e61a SHA-256: fc8cd325dee17d3b52dfd7fdfeecb3279377d9c7fa2e177ff046d4a8996d45fa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to sports highlights, directing users to a suspicious URL. ML and ClamAV heuristics strongly indicate maliciousness, classifying it as a phishing or trojan PDF. The embedded URL is the primary indicator of compromise, suggesting the document's purpose is to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/aws?utm_term=barca+vs+sevilla+highlights+4-+0 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452588/normal_600f816fc83d6.pdfIn PDF document text
    • http://1xbet-football.fun/deguluremogawedisuzajera0czd3.pdfIn PDF document text
    • http://agencymedia-ig.com/93100138608eseej.pdfIn PDF document text
    • http://onlajn-kassa.ru/yugioh_neuron_pcv5mqb.pdfIn PDF document text
    • http://msertis.xyz/198371145284t145.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417658/normal_600a4aa8d10e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475737/normal_5ff4eb3a69eca.pdfIn PDF document text
    • http://stav-games.ru/muvawibexelorbcsg2.pdfIn PDF document text
    • http://lalexejiwisejul.iblogger.org/gatudonux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_6018e9327a83a.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/rafiralexezol/simimemet.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/ksb_centrifugal_pump_performance_curve.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/97764927845.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/eje_renina_angiotensina_aldosterona.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/63581956661.pdfIn PDF document text
    • http://zivuneko.epizy.com/zifof.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/vetewuzunitubu.pdfIn PDF document text
    • http://jokiperone.epizy.com/bukurafizu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000168ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168EA 5432 bytes
SHA-256: 5def8b0550b12b57dbd9ca82d69983b508291ca41e0dc69198e261ca6cc068e7
font_01_sfnt_off00017b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B69 4924 bytes
SHA-256: 1071a49a392bcfc8b8a75607d36605bbece2327db242b4745687b5259e739f76
font_02_sfnt_off00018d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D45 15832 bytes
SHA-256: 557d2998908ca7af4ff7f328a489463d9a523f98b658b7d3aeb84183f43d8d63
font_03_sfnt_off0001bbfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BBFA 16372 bytes
SHA-256: f70bc9d636b255e2d1ba73196ace788c859f6ba9f6b6ea64f19b33d0380eb0e2

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