Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ae9e29f7269cdf…

MALICIOUS

PDF

84.3 KB Created: 2021-03-16 23:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d7c5b04448ad378e683109fa177d6ed SHA-1: 5fd75063de1d61acb8dec866cbfedbaafc22da74 SHA-256: d9ae9e29f7269cdfa2da906010f630db5d2af1ae117cbd3ee87b8e8c0009d7f7
96 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. No scripts were extracted, but the overall structure and heuristic firings suggest a phishing lure.

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://vilenefex.ru/award?keyword=dialogismo+polifonia+e+intertextualidade+pdf
    • http://finipupote.mywebcommunity.org/ponniyin_selvan_movie_first_look_poster.pdf
    • https://static.s123-cdn-static.com/uploads/4416504/normal_5ff58c5c3f0be.pdf
    • https://cdn.sqhk.co/jupozaregu/NZUGiao/android_pixel_launcher_keeps_stopping.pdf
    • https://static.s123-cdn-static.com/uploads/4487631/normal_5fccdd57cfe2b.pdf
    • https://cdn-cms.f-static.net/uploads/4380695/normal_602c7ae042d07.pdf
    • https://cdn.sqhk.co/kolusugego/2tUOieH/vutesiga.pdf
    • https://cdn.sqhk.co/dajuzafum/MQ65ha2/rivesuzejabugujojowebu.pdf
    • https://static.s123-cdn-static.com/uploads/4384150/normal_5fc601d31eade.pdf
    • https://cdn.sqhk.co/madagijoj/dWujcSI/50447620953.pdf
    • https://cdn.sqhk.co/kumotuxijufu/hjX0Uhd/51338899877.pdf
    • http://kurutog.mygamesonline.org/51780316927.pdf
    • http://otomail.business/network_security38r4k.pdf
    • https://cdn.sqhk.co/pimidima/hejhdjb/69585995306.pdf
    • http://blog-millionaire.buzz/regal_academy_fairy_tale_pop_20hobh.pdf
    • https://cdn.sqhk.co/masamiwe/tyjegiu/62332143222.pdf
    • https://cdn-cms.f-static.net/uploads/4451549/normal_5fd7a1172e426.pdf
    • http://songkfrk.site/41502988478m77wk.pdf
    • https://cdn.sqhk.co/mipijotom/ifDcicQ/bts_dynamite_mv_teaser.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://japamitafixe.myartsonline.com/haier_hlp21n_belt.pdf
    • https://s3.amazonaws.com/tevigotu/66508907020.pdf
    • http://rogomore.myartsonline.com/descargar_nuevo_diccionario_biblico_ilustrado_vila_escuain.pdf
    • https://s3.amazonaws.com/lorifawuvawot/rulogojabexujixi.pdf
    • https://s3.amazonaws.com/pulujolatepuv/32170318443.pdf
    • https://s3.amazonaws.com/najipavez/wabimuwe.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_off00010bdf.bin
2c09702cc45f2b42e9170cbcc36af1cf122f8f327ab4537aab20ed9c32242e7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDF 5428 bytes
font_01_sfnt_off00011e4e.bin
fa17fce35ada8901ae8518f25530e3cfdee99044fd7dca58a65143cee065ed8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4E 10900 bytes