Malicious PDF — malware analysis report

Static analysis result for SHA-256 b691ee31d69eb9e1…

MALICIOUS

PDF

74.0 KB Created: 2021-03-16 11:07:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9080183a56ba21490a4e4b4254903ced SHA-1: 20d50c4854f9d4971dc6debae6e281e9cd5dd79f SHA-256: b691ee31d69eb9e15a38de7d23cfebb497be5b326917dd482ef398d3eaae96d9
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to academic materials, consistent with phishing or malware distribution tactics.

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://jottigo.ru/wix?keyword=asim+naming+ionic+compounds+student+handout+answers PDF link annotation
    • http://hihikane.space/94030294330qorp1.pdfIn PDF document text
    • http://kyrgyztours.com/litasozewijorf9c.pdfIn PDF document text
    • http://hrushch.space/moon_river_brewing_company_in_savannah_georgiaafsut.pdfIn PDF document text
    • http://pixell.store/how_do_you_change_the_water_filter_on_a_whirlpool_french_door_refrigeratori5agg.pdfIn PDF document text
    • https://lepamume.weebly.com/uploads/1/3/4/8/134882258/a80492cd509.pdfIn PDF document text
    • http://suvafedam.iblogger.org/date_format_uk.pdfIn PDF document text
    • https://gulukuse.weebly.com/uploads/1/3/2/7/132740430/eada1bbe4.pdfIn PDF document text
    • http://getcabinets.xyz/is_skipping_without_rope_effective5xbf3.pdfIn PDF document text
    • http://max-lifting.store/xisowemidukatuko0ujqs.pdfIn PDF document text
    • http://xotekalulomeb.iblogger.org/loxanaramekogubakuf.pdfIn PDF document text
    • http://hisgohar.site/fevujadukiwakh5ca.pdfIn PDF document text
    • http://auto-fishing-rods1.club/fuwesedevu6l3fx.pdfIn PDF document text
    • http://digitalmicroteter.xyz/fifty_shades_freed_movie_filmywapw8woj.pdfIn PDF document text
    • http://rakotaravimi.22web.org/descargar_caballo_de_troya_8_gratis.pdfIn PDF document text
    • http://idealslimitalia-ufficiale.site/dshs_individual_provider_requirementswpis2.pdfIn PDF document text
    • https://bezofaxifi.weebly.com/uploads/1/3/1/6/131606652/e912607e079.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wekibik/apk_gb_whatsapp_anti_blokir_terbaru.pdfIn PDF document text
    • http://taxadip.epizy.com/84046591288.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/new_bhojpuri_video_movie_song_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fda8f46-da62-4a02-8aa1-572b1bce9b28/faruzivadomevelikupegud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22fa1d84-43ae-4321-9853-46ce280a8936/taylor_ice_cream_machine_for_sale_in_cape_town.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/bijefixivoviba.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/yaesu_ftm-100dr_aprs_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/lebofaxezulofufuxus.pdfIn PDF document text
    • http://memegimowa.epizy.com/formal_business_letter_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba87b242-1987-4a09-a78c-089781369cbd/xasuxi.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_off0000e38c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38C 5536 bytes
SHA-256: bf3322db6961bb96e9efd8d395917f32517281f82d4bf1f091a99a491c746d2f
font_01_sfnt_off0000f646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF646 10428 bytes
SHA-256: e3a805435cbfe5da4e1100c950c843fedb1ba78502fea6e0ad9448186f286f10

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