Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d532511f8448b6e…

MALICIOUS

PDF

79.3 KB Created: 2021-02-06 19:24:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 247a644719eac3db7dda82448ff1e594 SHA-1: b2f050426cd532f430c67e6ef1c5f869ad5750e7 SHA-256: 4d532511f8448b6e9cf18122887d859175de166d8ea7bbb49dd2ad7418a62acf
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://jottigo.ru/wb?keyword=creeper%20head%20template', which is likely a phishing or malware distribution lure. The document body, though heavily obfuscated, suggests it is presented as a 'creeper head template', indicating a social engineering pretext. No scripts were extracted, but the presence of external URIs and the overall malicious classification strongly suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/wb?keyword=creeper%20head%20template PDF link annotation
    • https://kunipasufit.weebly.com/uploads/1/3/0/8/130874165/seboj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_5ffff574817d7.pdfIn PDF document text
    • https://zuvagojajom.weebly.com/uploads/1/3/5/3/135398962/17a8f0924369b95.pdfIn PDF document text
    • http://lynciguest.com/dudunezarereterubolajwrfmh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489969/normal_5fca1750998f9.pdfIn PDF document text
    • http://dkblogin-de.best/270466234504xn1n.pdfIn PDF document text
    • https://kosukanawator.weebly.com/uploads/1/3/5/3/135304621/9183142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379742/normal_5fd0aba677cba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456984/normal_6004a58fb0f6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452853/normal_5fd7d93b12054.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475859/normal_6002a07e634ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494669/normal_5ffa8331923f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418583/normal_5fd7a6e718c47.pdfIn PDF document text
    • http://maturibcgj.space/nigogomexutuxe0wq1v.pdfIn PDF document text
    • http://tactical-jacket-sale.shop/gulorujokow92hg.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
    • https://s3.amazonaws.com/posufij/57243912492.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/general_zoology_mcqs.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/55374666918.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/96510908208.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/94855886998.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/xizupakujunosolipo.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/ratowafibuwofametularom.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCD 4568 bytes
SHA-256: f152563ddb680c23b6dc28a7739ee36b905b3bde66e75464db92675855241f30
font_01_sfnt_off0000fb4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4B 11612 bytes
SHA-256: 431cf3a56cb38dec2d59aece4e3f62defc6bf03d7245cf322e9eb1ce5f69cb2e
font_02_sfnt_off000121b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121B6 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60

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