Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf060ada39f24a5e…

MALICIOUS

PDF

514.6 KB Created: 2022-05-31 05:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: ab20545188f175591b125e65d2c3b7d0 SHA-1: 838128de38e68a63f64bc2bf1af746e9840724d3 SHA-256: cf060ada39f24a5e88025ac51018910424de9a916de9cbc5d1e4221511ebe8e8
74 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and the presence of an external URI with a call-to-action button strongly suggest a phishing or malware delivery attempt. The PDF document itself contains obfuscated content, but the overall structure and heuristic firings point towards a malicious intent to trick the user into downloading a payload from the identified URL.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3788

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mifuj.co.za/XSRYdR1H?utm_term=e-learning+project+report+pdf+printable+free+template+download
    • http://greenlasthousing.com/admin/kcfinder/upload/files/65533465570.pdf
    • https://kungfuclasshongkong.com/louis/taichi/ckfinder/userfiles/files/60414398445.pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16289a9e7ddedc---kiparibisuja.pdf
    • https://www.neoneophytou.com/ckfinder/userfiles/files/bepov.pdf
    • https://inprovitargentina.com/ckfinder/userfiles/files/lowadokalup.pdf
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16271b37d3e95c---vapusowenekositoj.pdf
    • https://vivaldiroberto.com/img/files/mediafiles/file/punebirikusipamaz.pdf
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fc724fb3e32---91419150773.pdf
    • http://poiskvod.ru/images/file/29776194682.pdf
    • http://cellfruits.com/ckfinder/userfiles/files/favukipepede.pdf
    • https://nocrime.cntwn.org/ckfinder/userfiles/files/rojegiwijogun.pdf
    • http://bona-concretebatchplant.com/d/files/40778928353.pdf
    • https://nomorjp88.com/contents/files/lunekumeruloduneligozeri.pdf
    • https://zadimobumisewi.weebly.com/uploads/1/4/1/7/141751469/4499179.pdf
    • http://weiddy.com/uploads/files/202203041949312934.pdf
    • http://bushurov.ru/images/files/japepotoguzigifewupisil.pdf
    • https://fozuwojomawunuk.weebly.com/uploads/1/3/0/7/130776264/5712da5d621f7.pdf
    • https://pastravariaizvoarelebratiei.ro/images/file/43016293487.pdf
    • http://monteconsultants.com/image/upload/File/kesikanopojodupirowi.pdf
    • http://nijiclothing.com/assets/ckeditor/kcfinder/upload/files/34837968023.pdf
    • http://ex2010.com/uploadfile/file/2022051522530773499.pdf
    • https://holyfamilyhospitals.com/ckfinder/userfiles/files/raxenagamaguveted.pdf
    • https://www.wemservice.com/ckfinder/userfiles/files/20633615331.pdf
    • http://gsest.com.sa/ckeditor/kcfinder/upload/files/86024654493.pdf
    • https://togepobofipod.weebly.com/uploads/1/4/1/8/141864735/4e2755d.pdf
    • https://comet.es/files/galeria/files/gukosavozeje.pdf
    • http://dongduong.net/Images_upload/files/fobadotajutogo.pdf
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/93868652669.pdf
    • http://www.awakohchang.com/image/upload/File/ajivonipozoki.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/8e4600ecf83fd7040986856f765542cd/42743644257.pdf
    • https://gadesign52.com/uploads/files/202205070244413028.pdf
    • http://www.stts-tir.com/admin/kcfinder/upload/files/71309461277.pdf
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/dcad761b1b642a658db7c553df763cbf/gexepikapiz.pdf
    • http://centromedicoveterinarioadda.com/userfiles/files/79457021971.pdf
    • http://svm.kalistecom.org/img/files/80407593812.pdf
    • http://travelbilet.ru/sites/default/files/file/23851467051.pdf
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16266351c3dea6---9555731369.pdf
    • http://sevimticaret.net/userfiles/file/resazuzozinazazomamib.pdf
    • http://www.sgpm.krakow.pl/aanewsysn/kcfinder/upload/files/suginatevitodejufevumevam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00079773.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x79773 16792 bytes
font_01_sfnt_off0007af85.bin
7d5176a1f1cd30454782f6ef20dae3b6c75e3bf0339a6bf98faf3904b534a989
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF85 18512 bytes
font_02_sfnt_off0007e02b.bin
220f2a2fed51c15cec7425b50e02319beea10a79de635028ad2a01a8590b1e30
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E02B 11168 bytes