Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb33ad5bf702da9…

MALICIOUS

PDF

93.3 KB Created: 2021-03-18 20:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3240c6a6d79dd0f012337b157ca26cee SHA-1: 18d9ac6d13087249b38b485bbaa0630641db0e82 SHA-256: bdb33ad5bf702da92f7244be04773e8ead3402855ba30a25c152bdb913aec0ad
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URLs and document body suggest a phishing lure, attempting to trick users into downloading further malicious content disguised as legitimate files. The presence of external URIs and embedded URLs points towards a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/award?keyword=exercices+de+chimie+atomistique+pdf
    • http://bigswinner.space/darkest_dungeon_guide_steamho0ms.pdf
    • http://antonioita.fun/download_stickman_dismounting_mod_apk_revdlrd5tt.pdf
    • http://petersikdar.com/91629787045fk1xi.pdf
    • http://udilische.club/descargar_formato_de_nmina_en_excel_gratis_mxico_2020y8q8u.pdf
    • https://static.s123-cdn-static.com/uploads/4413005/normal_5ffa67006a3e5.pdf
    • https://wufowidujexo.weebly.com/uploads/1/3/5/2/135293423/palemona.pdf
    • https://suzagadagaxu.weebly.com/uploads/1/3/0/7/130775939/7035500.pdf
    • http://wurijudopala.22web.org/pukul.pdf
    • https://static.s123-cdn-static.com/uploads/4369900/normal_5ff90dc3462c5.pdf
    • http://goodshopsales.xyz/xbox_one_controller_not_showing_up_on_pc_bluetoothhgovy.pdf
    • http://weex.info/29978410956njchk.pdf
    • https://static.s123-cdn-static.com/uploads/4382949/normal_6004f4e712327.pdf
    • http://parralax.net/cs_lewis_institute_apologetics_course86c2e.pdf
    • http://sparzha.club/guvelewovatejagwwqxd.pdf
    • http://select-get.top/catolicismo_romano_loraine_boettnerwops0.pdf
    • http://cyberghost.store/learning_actionscript_3._0_a_beginner_s_guide1uxd1.pdf
    • https://bexejasofipa.weebly.com/uploads/1/3/1/3/131397997/raxapakanam_rozipawudin_poxuv.pdf
    • https://cdn-cms.f-static.net/uploads/4495843/normal_5fd63cc7294dc.pdf
    • https://logutidukikov.weebly.com/uploads/1/3/1/3/131380383/duvudur.pdf
    • http://supernefritroller.xyz/diarios_de_motocicleta_script_en_espaolqqfbt.pdf
    • https://vejiledulibona.weebly.com/uploads/1/3/4/3/134318828/medaratolexexoka.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bixoravu.epizy.com/kenmore_elite_stove_top_replacement.pdf
    • http://dowinoxerirud.epizy.com/vurakififaz.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_off000129a7.bin
7b72c925850130c31b617b72155958fe954553893ba746943d76204e2cb9a9e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x129A7 5512 bytes
font_01_sfnt_off00013c3a.bin
9cbd9435bf1819baa07af1528de08f7c3267b60ad8ddb23e7acc36cc0b582910
pdf-font-stream PDF embedded font (sfnt) at offset 0x13C3A 13060 bytes