Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b61ab723da207f…

MALICIOUS

PDF

80.1 KB Created: 2020-12-27 03:50:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ca144611117c3397026412bc36b4d4c0 SHA-1: 9a4e2326c744cde795440ff90fe7432aa4ba33c9 SHA-256: 66b61ab723da207f87a62040afd4eacfe5e2017c8d0e55e3f5328f199bb6c839
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 pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, appears to be related to search terms for emulation software, suggesting a phishing or malware distribution lure. The presence of an external URI indicates an attempt to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/aws?utm_term=emulador+ps1+android+apk+bios+2019 PDF link annotation
    • https://cdn.sqhk.co/dubagelojuwe/hhfZhaj/21st_birthday_cake_decorating_ideas.pdfIn PDF document text
    • https://wimazuwog.weebly.com/uploads/1/3/0/7/130740080/jimekefexufigo.pdfIn PDF document text
    • https://waruzakelejabu.weebly.com/uploads/1/3/4/6/134600446/9e69ab.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/4094919.pdfIn PDF document text
    • https://cdn.sqhk.co/mebinolopuf/5PhhdzO/melevegakave.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1109957.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/xususilonise-givawobow-melojewa-mexelofaxexif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/93232c88-4350-481b-bd3b-aa27b6961706/what_do_r_and_s_mean_in_organic_chemistry.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/kepubogodizipefajigu.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/bursas_de_la_rodilla.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/9_double_window_envelope_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/royal_high_school_skirts_in_roblox.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/graphic_design_portfolio_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/26215733450.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/zeduxetisapujufewurok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d72fb83-e557-4c1f-b1c3-ac5666c704ee/lefesizawuboza.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_off0000e1ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EE 6880 bytes
SHA-256: 55f12ef5252002ebd8db2136fdec993d35d778f1669ca8043cb27a5bb4060d27
font_01_sfnt_off0000f86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86C 5748 bytes
SHA-256: 6c044cef3cebfce0fe43d1dd53ed6e65154b95076c751bb9ac71f8b9b11c2cd9
font_02_sfnt_off00010bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD2 11596 bytes
SHA-256: f2f63b8a88c24f2ba63a6e408cfde43e7f5f02ae08a03568e5cb6a405eaa7648

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