Malicious PDF — malware analysis report

Static analysis result for SHA-256 6844d6edabd2de3c…

MALICIOUS

PDF

76.5 KB Created: 2021-03-13 23:15:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d45a757a57dce331829b451a74593cc SHA-1: 9f6e80970281663137440c0784896810c32277c0 SHA-256: 6844d6edabd2de3c130ac563670a75a77a841e257d661b8ee46b5cfbfc8ddc32
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, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as Pdf.Phishing.Trojan. The primary IOC is the external URI, which likely leads to a phishing or malware distribution 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://pelibifir.ru/123?utm_term=android+room+example+androidhive
    • https://pememeva.weebly.com/uploads/1/3/0/8/130874233/gifitalusitoke.pdf
    • http://puzexunoj.22web.org/uc_browser_themes_free_for_pc.pdf
    • http://zakukat.iblogger.org/99020664151.pdf
    • https://wixokaregojes.weebly.com/uploads/1/3/2/6/132681478/d4525359b.pdf
    • https://rotutokobuzafoj.weebly.com/uploads/1/3/4/4/134455929/jujaxoji-miludukub-taveba-lobino.pdf
    • https://morapunepa.weebly.com/uploads/1/3/1/6/131606469/3797953.pdf
    • http://nolubebizufusim.iblogger.org/dofomu.pdf
    • https://xolesozetenosox.weebly.com/uploads/1/3/1/0/131070434/bafokivave.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fomaralunex/tubibutepopoxiwos.pdf
    • https://uploads.strikinglycdn.com/files/720bae3b-1d89-4bba-b89f-ac8fb34c36be/fokegojafinopivuxizeb.pdf
    • https://uploads.strikinglycdn.com/files/98eb8bb4-2454-4251-a159-a264c96d7263/computer_hardware_basics_in_hindi.pdf
    • https://s3.amazonaws.com/dowavelaxam/how_much_is_a_coffee_from_dunkin_donuts.pdf
    • http://lenadupubop.rf.gd/tutorial_ajax_jquery_php.pdf
    • https://uploads.strikinglycdn.com/files/35499c5d-caaf-4088-8dcb-5a3c8029e7b1/38722224847.pdf
    • https://s3.amazonaws.com/xetasif/16632356996.pdf
    • http://fojodopid.rf.gd/traductor_ingles_espaol_online_gratis.pdf
    • https://s3.amazonaws.com/sigobija/51274241905.pdf
    • http://guganukipajaxi.rf.gd/dotnet_cli_update_templates.pdf
    • http://xepolowamozuxan.rf.gd/71808923677.pdf
    • http://tudaket.epizy.com/buffalo_backup_utility.pdf
    • https://s3.amazonaws.com/ninasivol/vajorarimawixo.pdf
    • https://uploads.strikinglycdn.com/files/8de0c934-bade-497e-b758-451820b58df2/4472358058.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_off0000eb4b.bin
66c24b60d537e0b127d055efc075ce69040e6e04fe6f8af3034ec2ed22d414ed
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4B 5136 bytes
font_01_sfnt_off0000fc99.bin
0dc6c69bbe7afc4f11717a00f06d04a5de5687f24b29fd46c9ba6a09a00d86b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC99 11244 bytes