Malicious PDF — malware analysis report

Static analysis result for SHA-256 00313958b4cda3c5…

MALICIOUS

PDF

123.4 KB Created: 2022-06-12 21:10:22 +02:00 Authoring application: vynsjan (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: 07d381c2823fc0fc669db16bffc55500 SHA-1: 14c531868444cf871a2facaeff3d6ef431d05386 SHA-256: 00313958b4cda3c5d79eec58e0eb4fef9be76e7a287686bbd9f6cc13eec5e748
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links, many of which are associated with cracked software lures. One critical heuristic identified a link farm designed to direct users to potentially malicious content. The primary URL, http://evacdir.com/bandura/cheiro/..., appears to be a staging point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier clean score 0.0015

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://evacdir.com/bandura/cheiro/QW1tYW1tYSBrZWxhZGkgdGhvemhpIHBhcnQgMSwyLDMgbm92ZWwgbWVkaWFmaXJlIHBkZmJmZGNtQW1.ZG93bmxvYWR8bWc3Ym5oNU9IeDhNVFkxTkRrNE9URTJNbng4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/monitors/...?quaid=chickie
    • https://chatbook.pk/upload/files/2022/06/ZhyrNtlS2bDgdWJpDzuL_12_d28df316f1991d8861b422f34596d303_file.pdf
    • https://domainmeans.com/torrent-vivid-workshopdata-ati-121-cz/
    • https://nanoportal.it/wp-content/uploads/2022/06/Libro_Sastreria_Femenina_Metodo_Alarcon_Pdf.pdf
    • https://pi-psy.org/wp-content/uploads/2022/06/hallzenp.pdf
    • https://awinkiweb.com/wp-content/uploads/2022/06/zahlsta.pdf
    • https://myvideotoolbox.com/microsoft-word-2016-free-exclusive-full-version/
    • https://www.cooks.am/wp-content/uploads/2022/06/halfon.pdf
    • https://super-sketchy.com/hack-mi-cash-audition/
    • https://dashiofficial.com/wp-content/uploads/2022/06/Crack_Guaranteed_PDF_Decrypter_GuaPDF_3_2_15_WORK.pdf
    • http://armina.bio/?p=22880
    • https://sharingfield.com/upload/files/2022/06/uA4oFegpd7o85o2m98Vd_12_22cce4edb76e87b26a4b87c3d8cff404_file.pdf
    • https://www.jpgcars.com/mercury/126180
    • http://pzn.by/?p=25140
    • https://timber-wolf.eu/wp-content/uploads/legsonshow_linda_bareham_video.pdf
    • https://coachdeemprendedores.com/wp-content/uploads/2022/06/Genx_Scanner_1200dpi_Free_TOP_Drivers_Download__Checked.pdf
    • https://suchanaonline.com/metastock-11-download-with-crack-repack/
    • https://grandvenetianvallarta.com/shellalvaniagreaser3datasheet-hot/
    • https://mommark-landsby.dk/wp-content/uploads/urylau.pdf
    • https://cosmonet.club/upload/files/2022/06/RPptKTBHo9lmo3hojUyf_12_22cce4edb76e87b26a4b87c3d8cff404_file.pdf
    • https://dashiofficial.com/wp-content/uploads/2022/06/crack_guaranteed_pdf_decrypter_guapdf_3_2_15_work.pdf
    • https://secureservercdn.net/160.153.138.163/71l.ecb.myftpupload.com/wp-content/uploads/2022/06/gilcai.pdf?time=1655061013
    • http://www.tcpdf.org
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000e33.bin
a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE33 120140 bytes

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