Malicious PDF — malware analysis report

Static analysis result for SHA-256 910a8a017cb796cd…

MALICIOUS

PDF

95.4 KB Created: 2022-05-30 16:38:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 3ac67ffcd09976ac9a41c632f5f99ae0 SHA-1: c08e1136b1d7656ecd17ed3844f77582a3a91260 SHA-256: 910a8a017cb796cdfa3b679bbcfae35e95155afb8818f3fcdedeba84cb71ec12
104 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains embedded JavaScript and an external URI pointing to a suspicious domain, indicating an attempt to deliver a malicious payload. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution disguised as a document download. The primary IOC is the external URI used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://fecuq.co.za/YmrXLWy8?keyword=bluedio%20tm%20manual%20pdf%20download%20windows%2010%20crack
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622e36a751119---kunetixokisutakeb.pdf
    • https://fogoravirekan.weebly.com/uploads/1/3/4/3/134335139/a5b8d.pdf
    • https://cbrn.tj/nrsa_system/ckeditor/kcfinder/upload/files/juvizejubomujixisawa.pdf
    • https://babewepuk.weebly.com/uploads/1/3/4/3/134311046/tavunowi.pdf
    • http://dveropolis.ru/upload_picture/16565966145.pdf
    • http://quatanggiabao.com/images/uploads/files/83303638065.pdf
    • https://lefojokux.weebly.com/uploads/1/3/5/3/135399193/9114531.pdf
    • https://tiad-mtm.com/assets/admin/js/plugins/kcfinder/upload/files/gutuvebapemonafelosozuv.pdf
    • https://fepaximix.weebly.com/uploads/1/4/1/3/141336266/1680971.pdf
    • https://cfbadalona.net/ckdata/files/kozugudedesetuvemuzigono.pdf
    • https://champion-osk.pl/userfiles/file/puzamuwanevofu.pdf
    • https://torgradio.ru/new/files/file/fagulejofitila.pdf
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fbf9ede47c9---18648873566.pdf
    • https://thermocalnepal.ramjanki.com/ckeditor/kcfinder/upload/files/1966264036.pdf
    • http://timapools.com/uploads/file/xojubajevafoxalun.pdf
    • http://cathyourhair.nl/js/ckfinder/userfiles/files/gekizozasuwativa.pdf
    • https://wuvuvusutuzin.weebly.com/uploads/1/4/1/3/141344842/6983297.pdf
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/tigedasezejupolasara.pdf
    • http://privatmajo.sk/upload/files/80482437397.pdf
    • http://www.easemyloan.in/assets/kcfinder/upload/files/namudezupobuv.pdf
    • https://neurooperations.com/ckfinder/userfiles/files/boxuwidugisikenan.pdf
    • http://ceu-jgh.org/kcfinder/upload/files/80707001627.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf9b.bin
c1d32161d789b5c01e23007f11f635b0dcf3a3f082c58d199ecbc33edd7e16ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF9B 11288 bytes
font_01_sfnt_off0000da34.bin
9a11ab9c8aceb2a78c5724f89845f322d99967bc539765330ce7c1978f5f5943		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA34 19184 bytes
font_02_sfnt_off00010baf.bin
27fa49ca30b1f57c6e4f8b99ad1f73ead7010ce1f191e20d716503af09158f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAF 16160 bytes
font_03_sfnt_off00012120.bin
95880fcd74c3bbeb4ccc673125082c7c8dfb464a922e4e2980dd4d7d338893ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12120 16952 bytes
font_04_sfnt_off000155d8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x155D8 16792 bytes

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