Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb20beb4a9212ceb…

MALICIOUS

PDF

81.4 KB Created: 2021-03-16 04:05:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b072b6e150c078d497ce231fe9e815a SHA-1: d6222aea2fcf5537803aa7eaa38b79390e09bfdc SHA-256: fb20beb4a9212cebc1bca06d2c1a379eab8028b71e8be610edca61cbd1fba0dc
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'https://soxebez.ru/123?utm_term=aida64+sensor+panel+s', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to software information or downloads.

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://soxebez.ru/123?utm_term=aida64+sensor+panel+s
    • https://cdn-cms.f-static.net/uploads/4382613/normal_60254d1782bdb.pdf
    • https://static.s123-cdn-static.com/uploads/4373999/normal_5feb5c2159d57.pdf
    • https://cdn-cms.f-static.net/uploads/4453730/normal_5fd8dc6bea996.pdf
    • http://manamuposa.getenjoyment.net/10320977413.pdf
    • http://devigebogubiret.getenjoyment.net/99517184220.pdf
    • https://cdn-cms.f-static.net/uploads/4418167/normal_5fdacb2f93bad.pdf
    • http://goladelexugezi.sportsontheweb.net/aprende_ingles_con_canciones_hotel_california.pdf
    • https://static.s123-cdn-static.com/uploads/4443812/normal_5fc6bfe384c04.pdf
    • http://jisuvakuwiraza.medianewsonline.com/tijolobo.pdf
    • http://zodimasar.mypressonline.com/tofazuxixowagajonijumigo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a9b32060-db78-4d39-8eae-078b20c8cf2a/wujimusipa.pdf
    • https://uploads.strikinglycdn.com/files/49c9f6be-d7e0-4bd4-81f6-8f40946baaef/wsjt-x_2.1.0_manual.pdf
    • http://zalatikewal.atwebpages.com/amnistie_fiscale_maroc_2020.pdf
    • https://uploads.strikinglycdn.com/files/02f3d86f-5655-4a97-9584-74e1201f4e7c/medenapulemires.pdf
    • https://uploads.strikinglycdn.com/files/6dd17c0d-a84b-4547-883c-02eabc732787/88959510835.pdf
    • https://uploads.strikinglycdn.com/files/07291002-5933-4a87-89c9-320a77f60f31/wudadizesu.pdf
    • https://uploads.strikinglycdn.com/files/d6b39e1f-9dd4-4de8-8755-2076ee7e1ca1/sijuzukaropinemirawelexaw.pdf
    • http://jaweratiz.atwebpages.com/navodaya_registration_form.pdf
    • https://uploads.strikinglycdn.com/files/154c4f20-edc0-46d0-acd1-18c4dd3182f1/18042420071.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010008.bin
d760c4eb7eecbb8c03f8541074776d7484ac0c3f4adbf9ad4b5414b059bd02f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x10008 5184 bytes
font_01_sfnt_off000111bc.bin
0e4745196afea3eba9aeb4df44dff55edff011267fae711699223461ec29d11f
pdf-font-stream PDF embedded font (sfnt) at offset 0x111BC 11380 bytes