Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7fe2a68d6718d8f…

MALICIOUS

PDF

74.0 KB Created: 2021-04-19 01:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 256ec923d0e01d006be97a69fd81a873 SHA-1: 9d2c0edfabcce0e4ece8b79f1e218bb2d4339d03 SHA-256: b7fe2a68d6718d8f1bfed329395cce9d4d9a1d2b6d17542632a4431a30ba2d00
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or malware distribution.

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://fokemale.ru/strik?utm_term=hampton+bay+e75795+manual
    • http://makamar.tech/medical_surgical_nursing_9th_edition_lewisuzo5j.pdf
    • http://bibilewixan.iblogger.org/48186971355.pdf
    • http://nikupajosokob.22web.org/automobilismo_d_epoca_download.pdf
    • http://card2card.live/simple_json_parsing_example_in_javaidzrg.pdf
    • https://cdn.sqhk.co/nivavepe/hgRqihJ/zewivo.pdf
    • http://dorezuda.iblogger.org/keripubuzewaxaj.pdf
    • https://cdn.sqhk.co/patagarinixa/chbgf0j/50358873455.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8df9d1b7-8f6e-49e1-bdac-c9da4d4291fd.filesusr.com/ugd/12c198_8559788ac0484e9483ae96fe52d997e2.pdf?index=true
    • http://zoregok.rf.gd/excel_set_worksheet_name_vba.pdf
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_15cd0f41594f4875abf32dd0e18955d8.pdf?index=true
    • https://s3.amazonaws.com/kisimujuk/angular_form_disable_enter.pdf
    • http://xolupakadenat.rf.gd/java_programming_language_in_urdu.pdf
    • http://lavufufoludu.rf.gd/luwokopo.pdf
    • http://budibisila.epizy.com/sejarah_kota_malang.pdf
    • https://s3.amazonaws.com/gopuze/my_math_book_4th_grade_answers.pdf
    • https://s3.amazonaws.com/wupagivoz/what_causes_dry_patches_of_skin_on_your_face.pdf
    • https://s3.amazonaws.com/gewuwasi/forgotten_realms_deities_5e.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_off0000e480.bin
6b9ba8fb258b9caff9f603aec8c5b424d6604e6d40f05f3676806159d02d69a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE480 5252 bytes
font_01_sfnt_off0000f65e.bin
e93afc06ea2506ae0a2c7b37befcc7f3363211c390cc3f2ce90a078048398d29		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF65E 10720 bytes

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