Malicious PDF — malware analysis report

Static analysis result for SHA-256 5548836c33077efd…

MALICIOUS

PDF

77.6 KB Created: 2021-03-24 04:41:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 504424f41438531eb0781b871bd88101 SHA-1: a5e5f06c64b870abc1a29a4890f131f78db74135 SHA-256: 5548836c33077efd55b1bab6d4d62639f324f7b725745bfcad57047a4e925378
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a phishing or social engineering attempt. The presence of multiple embedded URLs, some with unknown reputation, further supports a malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://fokemale.ru/strik?utm_term=how+does+the+book+end+defending+jacob
    • http://lassituda.online/91039045080ox6e0.pdf
    • http://eliyalte.com/4726524682821g8e.pdf
    • https://cdn.sqhk.co/fabadipub/Hj1ijij/fesutatozujo.pdf
    • https://cdn.sqhk.co/lixipadiwel/iUWAYLg/fadifawumuvonipixisuwuko.pdf
    • https://pagopejej.weebly.com/uploads/1/3/5/3/135315805/c77daa420a.pdf
    • http://tamakar.tech/92610167331jdjd0.pdf
    • http://bonboxstudio.com/99193439586mdjg1.pdf
    • https://cdn.sqhk.co/tategupet/cazEwLW/retro_games_download_for_raspberry_pi.pdf
    • http://disclosures.space/amablesser_remix_datafilehostlkjlr.pdf
    • https://sanokigoj.weebly.com/uploads/1/3/4/8/134863934/6996861.pdf
    • http://pannochki-art.com/fingerprint_maze_vector0dccn.pdf
    • http://masalev.ru/macbeth_study_guide_answers_act_2r4vsp.pdf
    • http://clubstore.pro/mixing_eq_cheat_sheetyj6yr.pdf
    • http://soldonlittleton.com/how_to_learn_korean_language_with_pronunciationwp2hl.pdf
    • https://cdn.sqhk.co/gixekoji/OihZohi/merge_magic_treasure_chests.pdf
    • http://discout.online/gone_with_the_wind_sequel_full_movieae8gm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ravesuvanobil.epizy.com/senior_technical_project_manager_salary_seattle.pdf
    • https://s3.amazonaws.com/towutoginadivu/ziwulowakisupusogapete.pdf
    • https://s3.amazonaws.com/norozovijalu/adobe_photoshop_cs5_crack_hosts_file.pdf
    • http://nowaginog.epizy.com/drbd_9_user_guide.pdf
    • http://xitirinajeki.epizy.com/abiudi_misholi_songs_audio.pdf
    • http://lefigop.rf.gd/casio_g-shock_ga-1100gb.pdf
    • https://s3.amazonaws.com/xamibudasagas/2006_bmw_330xi_0-60_time.pdf
    • https://s3.amazonaws.com/gafedupeba/lulemibafez.pdf
    • https://s3.amazonaws.com/vavejijitatofu/hillshire_farm_honey_ham_cooking_instructions.pdf
    • http://zelimuperuna.rf.gd/bangladesh_calendar_2020_with_holidays.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_off0000f035.bin
f053bfbbbd04f1fcbd3390a6dcce69171b59290fed90c96c308111753224706b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF035 5488 bytes
font_01_sfnt_off000102fe.bin
1e8fe281aff13c10acf0cb40a6a54fe3a69cf79c549fe2e253838ace1287f7f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102FE 10464 bytes

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