Malicious PDF — malware analysis report

Static analysis result for SHA-256 124ab4043a8abad2…

MALICIOUS

PDF

93.8 KB Created: 2021-02-20 08:57:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: bfab68752401c45c034f531b0cf3828f SHA-1: 900a78aca9d6d894de97d8257b129a3fb3a73f3c SHA-256: 124ab4043a8abad25eb8a242c25fb060f499e1e2f92e33589dc03f109780b6bf
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a site disguised as educational material. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were directly extracted, the presence of external URIs and the nature of the document content suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=nova+3804+making+stuff+cleaner+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/tivuzofep/iin4Mgg/lisobemawedoxa.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/hhihwjc/fopowe.pdfIn PDF document text
    • https://cdn.sqhk.co/ropimipaf/hlijhiQ/scary_clown_noises_soundboard.pdfIn PDF document text
    • http://dezlice.ru/adding_integers_free_worksheetsfe9za.pdfIn PDF document text
    • https://cdn.sqhk.co/noxomosanena/hbgenig/winino.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/adjajib/6373871174.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/Lfwdggu/dj_sounds_effects_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/ghKgifA/irish_defence_forces_application_process.pdfIn PDF document text
    • https://cdn.sqhk.co/mibazudifij/diajajb/daxudanopoxorureragunetu.pdfIn PDF document text
    • http://xudulefamal.iblogger.org/1d_barcode_generator_software_free.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzifixe/jihgx0u/how_does_gps_race_timer_work.pdfIn PDF document text
    • https://cdn.sqhk.co/xurinuwame/jhaIOhe/optical_inquisitor_17_apk_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://foripoj.epizy.com/deduction_guide.pdfIn PDF document text
    • http://mopezuvo.epizy.com/xobowogepawomumemewax.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/catalogo_inglesina_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/iserror_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/ikea_brand_identity_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/bosch_ve_pump_manual.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D0 7044 bytes
SHA-256: 79978a6630ea1bb6ec72345e09d71b716a0da67e6d883f7e9d2fbd6f73d47965
font_01_sfnt_off0000f5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BA 3048 bytes
SHA-256: b903261f2e2350152439773ca1702294038377e852de065cb6d2bf178f9503dc
font_02_sfnt_off00010082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10082 6068 bytes
SHA-256: 7257db3032b917649195fb3a1ad1e8cc4d34994ce02ba5aa9631c920bf0f5632
font_03_sfnt_off00011521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11521 1648 bytes
SHA-256: 2caeb454a93b18584067451a2b12acb77e4a50455da74f41c574601843ce0219
font_04_sfnt_off00011d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D65 15372 bytes
SHA-256: 280dbe26797b8bd4fb62beb9f45e2874dd66bbda8ce6f11bc789ea11b7dd1541
font_05_sfnt_off00014de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DE8 18180 bytes
SHA-256: 9aed1e7351bc6446af2decac2b7b1988d7d586c26753526b62d46108801f44da

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