Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4e4b34661f0539…

MALICIOUS

PDF

86.2 KB Created: 2021-03-27 11:03:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9f3afe501f024b6199e35438214ee006 SHA-1: c54d1332d003c2ab1df7a721e5f22268fe08cf12 SHA-256: ca4e4b34661f0539cb2283e9a7a3ec4679521793a146e81d3a5db99719cdcd33
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/award?keyword=map+of+usa+with+cities+pdf PDF link annotation
    • http://vulemese.iblogger.org/lifewexese.pdfIn PDF document text
    • http://mylic.ru/mecanica_vectorial_para_ingenieros_dinamica_10_edicionm4nlw.pdfIn PDF document text
    • http://medgaj.com/mevovadopedituwitodrggi7.pdfIn PDF document text
    • http://pasetbs.xyz/samsung_smart_tv_remote_control_aa59eg6ey.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/smashy_road_arena_mod_apk_all_cars_unlocked45lue.pdfIn PDF document text
    • http://bosabamat.22web.org/voxuvuxibavedo.pdfIn PDF document text
    • http://dobujebenebif.66ghz.com/ziwozidukuwevejujad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wikatamuk.rf.gd/baby_emoji_pictionary_game_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/evenflo_chase_lx_harnessed_booster_car_seat_jubilee.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/botiwufazuvifegokaboluvar.pdfIn PDF document text
    • http://bozudob.epizy.com/performance_appraisal_comments_on_compliance.pdfIn PDF document text
    • http://mivizuganax.rf.gd/aristotle_worksheet.pdfIn PDF document text
    • http://salalew.epizy.com/why_does_my_washer_say_f_21.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/collision_reporting_centre_azilda_ontario.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/41948473349.pdfIn PDF document text
    • http://xibunagevidaze.rf.gd/pugizevobalorizikuzes.pdfIn PDF document text
    • http://jurixosemur.epizy.com/the_communist_manifesto_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/how_to_ease_breast_pain_while_breastfeeding.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/harmonisasi_akuntansi_internasional.pdfIn PDF document text
    • http://kejakum.rf.gd/gegifotezobaxobuvif.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/job_advertisement_for_hr_manager.pdfIn PDF document text
    • http://dulubuli.rf.gd/73408331097.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/60848010428.pdfIn PDF document text
    • http://lasemiduje.rf.gd/74081993256.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/tikoganupubafadegotad.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001126a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126A 5212 bytes
SHA-256: fedc0f35cafac5327687480aa5606a7e59ccfc837e573ff0379bf65490fb932d
font_01_sfnt_off0001244b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1244B 11492 bytes
SHA-256: 8678396722be7379b40e99e3f9f04358c8c9dc969b306dc647ac56e9b34dd01b

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