Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ffe7d9bed340fa1…

MALICIOUS

PDF

87.3 KB Created: 2021-04-12 06:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f9190def4bd075b6346afb45c0cfcf4 SHA-1: 663f9e12fef86890a8089feac1f99be62cb6b497 SHA-256: 2ffe7d9bed340fa129b1f1deaffffd744911c2ccec2790ff681f9892d002ca93
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall classification suggest the document is designed to lead the user to 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://resalured.ru/strik?utm_term=fitbit+charge+hr+turn+off
    • http://viwoxavufonodu.22web.org/14450714589.pdf
    • http://junemam.22web.org/breviario_dos_politicos.pdf
    • http://visemomasa.66ghz.com/catch_me_outside_song.pdf
    • http://pubopogebam.22web.org/59027699866.pdf
    • http://wepegudefagixu.iblogger.org/canon_mg3122_printer_wifi_setup.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c751e6e8-0850-424d-b14e-d7ae46260796.filesusr.com/ugd/bc1028_364df42a04e2477eaebf63e4fa8747d1.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cc43c003-2846-4a7a-bc1c-5ad4f5413ad0/batosabegulidoz.pdf
    • https://uploads.strikinglycdn.com/files/47d1d632-6539-45d3-8c28-4d74a6f4d5c5/the_stand_2020_episode_2.pdf
    • http://pisibagavorinow.epizy.com/best_king_size_mattress_2019_consumer_reports.pdf
    • http://jedabotuz.epizy.com/56551353284.pdf
    • http://libevomupukado.rf.gd/dodge_dakota_bed_repair_panels.pdf
    • https://bdee3e82-1fe6-4084-b289-f15f5249f83e.filesusr.com/ugd/749937_bff048924a84411683cdc0d2753e1d7a.pdf?index=true
    • https://63b1f34b-4847-450f-8d9a-4788d10e1cf5.filesusr.com/ugd/451a43_d465c632715548768a84a87fccc1ea44.pdf?index=true
    • https://s3.amazonaws.com/somamere/man_laughing_sound_effect_free.pdf
    • https://s3.amazonaws.com/lotibabakuj/zulajuzedanevomofupib.pdf
    • https://s3.amazonaws.com/paropabaru/taurus_pt111_g2_review.pdf
    • https://uploads.strikinglycdn.com/files/cb1a6b22-2a63-462c-8ecf-88e04f6f9daa/pepadizuxakukubu.pdf
    • https://b147a2f3-58af-4013-9def-597e86e94513.filesusr.com/ugd/47d6bb_db036cfbd4dd49af975d054616132ee0.pdf?index=true
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_288be83e1def423483ca53976daed6f3.pdf?index=true
    • https://s3.amazonaws.com/tumasun/punjabi_sad_song_audio_gane.pdf
    • https://s3.amazonaws.com/nuselufuzo/what_does_performance_appraisal_include.pdf
    • https://uploads.strikinglycdn.com/files/953c43f9-d6e3-4365-9285-2b30bfae42aa/78254639671.pdf
    • http://banovezivax.rf.gd/dan_brown_best_books_ranked.pdf
    • http://luxopemuvoxu.rf.gd/xurumojajonimovezize.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_off00011967.bin
1d1a8fdb16ec39c4c0690bd7dd5e76aec495f5d731fdfb50b445480be112e32a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11967 5028 bytes
font_01_sfnt_off00012a88.bin
a2cdb5dac6ddf349711ae3d6fe33527c966ea601ec8326d106a322c03ef58186		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A88 11044 bytes

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