Malicious PDF — malware analysis report

Static analysis result for SHA-256 217098e55f9c2da4…

MALICIOUS

PDF

68.4 KB Created: 2020-11-09 22:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fe4e06d5464b186f0907dfb58e231858 SHA-1: 9fce634becb509b40af704e335fcdae1dc68f95b SHA-256: 217098e55f9c2da40983e313fb8aee0febfeb53fc6d5fc6b83825a2f012081a0
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 an embedded URI that directs the user to a suspicious external URL, disguised as a literary summary. This URL is likely intended to host a malicious payload or phishing content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://trafficel.ru/aws?keyword=summary+of+alone+by+edgar+allan+poe PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402964/normal_5f93e07029462.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5fa3599212d6a.pdfIn PDF document text
    • https://duxuremi.weebly.com/uploads/1/3/4/6/134623812/1028172.pdfIn PDF document text
    • https://fupesovuzej.weebly.com/uploads/1/3/4/0/134016868/femubapabuxo.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/sabaro.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/tadovu/rezoxogowikuf.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/11391207429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d40a22eb-07cf-49ee-8308-c7fee1e8fcc1/pebopufovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cf124e5-229f-44ed-8a2a-1563b84e24d6/18891412367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8640571e-7a88-465d-a402-1fd596f0da57/12450788781.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_off0000d0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E4 5528 bytes
SHA-256: 8b93b006148fa43daa3b8b15fa2f6f16a966b90b9cf73a433ea7ef05a3bed62b
font_01_sfnt_off0000e39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39E 9812 bytes
SHA-256: c0686715dbc5c4b3217a0b2391adf02f1fdc59f7f86fbc06cb29e8a15bbedc81

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