Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fb4281103f8373…

MALICIOUS

PDF

79.7 KB Created: 2021-03-28 08:35:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af414de1e9a484bbb963bbea1010f02d SHA-1: e38e0f900d7843d1416714934543543fb77b7c3c SHA-256: e0fb4281103f8373ee210099aafdc3f534edab84c3b54c5ccd80c7de899cbce4
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a malicious domain, likely intended to trick the user into downloading further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, and the PDF structure suggests it's designed to exploit vulnerabilities or deliver a payload. No scripts were extracted, but the presence of external URIs and the overall detection profile points to a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/123?utm_term=corporate+profile+design+template+free
    • http://terem.space/8803680152yls20.pdf
    • https://cdn-cms.f-static.net/uploads/4382779/normal_604132e4ba1fb.pdf
    • http://whalesqpa.fun/24_hour_clock_worksheets_year_5lb5zx.pdf
    • http://xamipofu.22web.org/burusuxapizojevafub.pdf
    • https://cdn.sqhk.co/wuwoxegolewa/RibJwkq/seasons_of_war_derek_landy_release_date.pdf
    • http://hookup157.fun/25490758247ptxdu.pdf
    • https://cdn.sqhk.co/kupujape/OrhdFgh/86506376188.pdf
    • http://kutufirix.iblogger.org/71787500399.pdf
    • https://cdn-cms.f-static.net/uploads/4389582/normal_60338c9a48d4e.pdf
    • https://cdn-cms.f-static.net/uploads/4465252/normal_604d5d7e0d6c2.pdf
    • http://gelchlen.fun/973823662271vxq0.pdf
    • http://fortuneo.best/shimano_alfine_8_service_manualuf32t.pdf
    • http://divalurumewib.iblogger.org/cerebral_arteriovenous_malformation.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lomuper/powadekimafalaku.pdf
    • https://uploads.strikinglycdn.com/files/21424ac4-2d34-476b-b8f5-281fa0a5b0ab/washington_dc_weather_march_27.pdf
    • https://uploads.strikinglycdn.com/files/0c7d2cd2-457a-4834-b5c7-a81e33c3ed91/hoover_windtunnel_t-series_tempo_bagged_upright_vacuum_cleaner_with_hepa_media_filter_uh30301_blue.pdf
    • https://uploads.strikinglycdn.com/files/7e1fd443-e4a0-4f27-a9e5-764777fa0c0b/the_exorcist_trailer_original.pdf
    • http://pomababotesu.rf.gd/3rd_grade_math_worksheets_long_division.pdf
    • https://s3.amazonaws.com/gizonukorad/2015_chevy_impala_limited_owners_manual.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_off0000faf8.bin
3da1321856f51a2f7e7b233807206048c93251fdc4f9bc65fda6beef6bed12af
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF8 5268 bytes
font_01_sfnt_off00010cc7.bin
a051090a213cd8fa9a2adfd9c41faa7eb0800bb361bb767b5ae9bcb942d2fc82
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC7 10836 bytes