Malicious PDF — malware analysis report

Static analysis result for SHA-256 899c462a7c7d0de4…

MALICIOUS

PDF

79.9 KB Created: 2021-02-14 07:10:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 5683d4da59f144d29f32da5e8ab13583 SHA-1: 00fe2b8fd306acd041a406abd5cfafcc990926b6 SHA-256: 899c462a7c7d0de4d366e7e8eeb8b8eba4116a54e405c4abe62ff72820b277b1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site offering a cracked version of Windows Server 2012 R2, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, but the presence of the malicious URL is sufficient to infer the attack pattern.

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://seumenha.ru/wb?keyword=crack%20windows%20server%202012%20r2 PDF link annotation
    • http://madusotiju.22web.org/99644920405.pdfIn PDF document text
    • http://in-arenas.com/70436376494iqf10.pdfIn PDF document text
    • http://netewe5.xyz/realtek_pcie_gbe_family_controller_code_100sxde.pdfIn PDF document text
    • http://xelipev.22web.org/filazekelovidunevaze.pdfIn PDF document text
    • http://freshremont.com/jujinuzdvg9m.pdfIn PDF document text
    • http://ukranews.site/pulse_oximeter_cvs_how_to_read8j27y.pdfIn PDF document text
    • http://setofexperience.site/android_assets_text_file_readkqb40.pdfIn PDF document text
    • http://hotsales-com.xyz/ralibekokafanunly55.pdfIn PDF document text
    • http://mkr-olimp.info/goal._com_live_scores_premier_league_tableq6f0w.pdfIn PDF document text
    • http://paypallsecurity.com/40624171532vsqe.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/nimuwet/allshare_android_app.pdfIn PDF document text
    • http://sosibozipez.rf.gd/vimanam_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/kingdom_two_crowns_winter_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/bootcamp_mac_os.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/atenolol_pharmaceutical_dosage_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/involuntary_manslaughter_sentencing_guidelines_pennsylvania.pdfIn PDF document text
    • http://modudupudabu.rf.gd/zukutuj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AA 5348 bytes
SHA-256: 9c8280ac3bc2921967363bd83045f69be29a6b6712f332c2e69ed7e6c3ce1fee
font_01_sfnt_off0000f607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF607 11648 bytes
SHA-256: a672e3a70cb595f443f63d0811abc1e0fa0a919e51de90787663b4e753c3758d
font_02_sfnt_off00011cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD6 16160 bytes
SHA-256: 25a5e6c7c9cd73e1730f271d334b71b3c0ac6385951e3737251623a68d8eef5c

Open this report in the interactive analyzer, or submit your own file for analysis.