Malicious PDF — malware analysis report

Static analysis result for SHA-256 122dbc64c05f5438…

MALICIOUS

PDF

82.8 KB Created: 2021-03-18 21:02:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5deaefa231173014fed51f5bdbaa9d32 SHA-1: 3a34188316500a98f080f75453df029286a3425a SHA-256: 122dbc64c05f5438e30fd23e7a04e6135d15861f76cc0692360a3135d462882e
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to programming a remote control, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit user curiosity and lead them 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://seumenha.ru/strik?utm_term=how+to+program+my+comcast+remote+to+my+sony+tv
    • https://static.s123-cdn-static.com/uploads/4473403/normal_5fecfc1e3d870.pdf
    • http://jurelireroxux.22web.org/multiplication_coloring_worksheets_for_kindergarten.pdf
    • https://cdn-cms.f-static.net/uploads/4428045/normal_601d7b825bf53.pdf
    • http://wukosemat.22web.org/free_chinese_auction_tickets_template.pdf
    • http://wipalogazagak.22web.org/giorgio_agamben.pdf
    • https://lorovojiwu.weebly.com/uploads/1/3/4/3/134318747/mafesekit.pdf
    • https://static.s123-cdn-static.com/uploads/4379603/normal_5fe3e37456e68.pdf
    • https://jozinuzo.weebly.com/uploads/1/3/2/7/132712000/litejavovezime_zasipujozev_nufalalewupup.pdf
    • https://static.s123-cdn-static.com/uploads/4484363/normal_5ff52913207a1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://f3c4034a-4a94-4c47-b6c5-0445626d7bf8.filesusr.com/ugd/655f09_95a92e1b92fb436eaef524a32f6dbee8.pdf?index=true
    • https://71347f20-8353-4153-bebc-dd2a28b3a5cf.filesusr.com/ugd/a382ee_03a5fe82a2034aa99da169ab02ab8945.pdf?index=true
    • http://pitowurojagit.epizy.com/immigration_uk_questions_and_answers.pdf
    • http://tatefes.rf.gd/zedemiresudazixigu.pdf
    • https://uploads.strikinglycdn.com/files/62b83d39-37b0-4bed-9702-351f657ab1c3/cell_and_molecular_biology_major_uoft.pdf
    • https://uploads.strikinglycdn.com/files/ce02eed5-0b6e-4722-b124-cd28d68dc0d7/xakawajotelekuza.pdf
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_df00b21f867d4d0da30013c400f4bace.pdf?index=true
    • https://uploads.strikinglycdn.com/files/67cc2353-709c-4b0f-9f56-9e0a9f3df16f/linatego.pdf
    • http://raduniti.epizy.com/nefosexewo.pdf
    • https://uploads.strikinglycdn.com/files/d0970817-fc5b-443c-890c-cf3b9bd99b06/223509941.pdf
    • https://uploads.strikinglycdn.com/files/d0420cfb-945b-4d90-939d-a61624fe891a/2152615842.pdf
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_06aaf17a61c84c86adacc465d5304f58.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f93f.bin
5639523b154960a7ab7b3abbbbdf6fcd85ac6604e9433b49e3314a2caa2384ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF93F 5176 bytes
font_01_sfnt_off00010acd.bin
5b1601d00d0cdc9cc562e2426be3dd7a28a16211dde80bebb096e56c99a4de19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACD 10716 bytes
font_02_sfnt_off00012f62.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F62 4324 bytes

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