Malicious PDF — malware analysis report

Static analysis result for SHA-256 473c62dae05b730c…

MALICIOUS

PDF

77.2 KB Created: 2021-03-10 14:18:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dcb379fa9f9458ee1f26588d2c64c0cf SHA-1: 505bab43216d4a9be26793565e1b5c5d1684a810 SHA-256: 473c62dae05b730c6f8a89c568667b860c4c2518807c6b6a3c4e4e0bb2d3e2e7
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect users to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a specific PDF title, aiming to trick users into clicking the malicious link. No scripts were extracted, but the presence of external URIs and the nature of the PDF suggest it's a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/award?keyword=eduardo+galeano+livro+dos+abra%25C3%25A7os+pdf
    • http://bitcoinlearningcentre.online/fafudozizemakixarawip87lce.pdf
    • http://vumonivaxozutod.mypressonline.com/remington_700_sps_270_camo.pdf
    • http://jigapenufi.medianewsonline.com/48024762906.pdf
    • https://cdn.sqhk.co/fuvonazavo/1ja2hfw/dragon_robot_2_mod_apk_android_1.pdf
    • https://cdn.sqhk.co/tamaladafa/0gfiibu/nefomawezalovuf.pdf
    • http://fewudutizoxom.medianewsonline.com/dokikurowexikezum.pdf
    • http://dnepr24.info/beboncool_gamepad_apkxl83a.pdf
    • http://tawaguf.scienceontheweb.net/what_is_the_correct_order_to_watch_the_marvel_films_in.pdf
    • https://cdn.sqhk.co/baluwofuk/Gjhft4Z/73037860827.pdf
    • http://narewenu.22web.org/46474793591.pdf
    • http://richteam.site/brevir_harian_katolik_apk53xav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gawuvuv.epizy.com/baby_girl_birthday_songs_free.pdf
    • https://s3.amazonaws.com/padosumifubobo/nilsson_riedel_electric_circuits_10th_edition_solutions.pdf
    • https://s3.amazonaws.com/tedowafomaru/nodasezuwugusaxoler.pdf
    • https://s3.amazonaws.com/midaguvimabof/89019345805.pdf
    • http://padekapekalerel.rf.gd/24742586724.pdf
    • http://finezifor.rf.gd/88619034337.pdf
    • http://towupew.epizy.com/camscanner_app_link.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_off0000e9d9.bin
f0212eeb1112b37e6c2d8ee424ec548b66ddb4b670cca78675238eb597f02020		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D9 5548 bytes
font_01_sfnt_off0000fccd.bin
118b9c9e85d95e642bbe6ad18f63343c110a73471c869587e060ccd6b270179f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCD 13744 bytes

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