Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa09d1c57a55965…

MALICIOUS

PDF

76.7 KB Created: 2021-03-25 11:19:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 63952bdfc7fbc816bcbcc7bf89f4b102 SHA-1: 49008101189ed122c50d4c4f694cee9e69505083 SHA-256: daa09d1c57a559650b7654720872e278abccb05ea41496cbe86ac044915a8afd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/123?utm_term=af+form+36+purchase+request PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460466/normal_5fd94a83dd79d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426967/normal_6013a3b505411.pdfIn PDF document text
    • http://probmaka.tech/79418188029w9o0d.pdfIn PDF document text
    • http://huseyincanx.com/battlefield_1942_single_player_mapsiqg4z.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/hhr60U0/knife_throw_java_game.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/rTTziiU/sibeberuregukusatewirizar.pdfIn PDF document text
    • http://4338bacchus.com/where_to_find_serial_number_on_ez_go_golf_cart4ko4b.pdfIn PDF document text
    • http://kmikaerfs.ru/how_to_check_furnace_air_filterf9tf2.pdfIn PDF document text
    • https://cdn.sqhk.co/gavivevok/eWgRjb4/37208210399.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/Lgjeq8k/candy_crush_soda_saga_mod_apk_unlimited_everything.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pimapejenila.epizy.com/serra_bioclimatica.pdfIn PDF document text
    • http://kevatudoritek.rf.gd/ap_chemistry_acids_and_bases_test.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/migikikalivasotuve.pdfIn PDF document text
    • http://kalotiwinilobiw.epizy.com/science_fiction_books.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/83021830169.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/genie_intellicode_remote_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/apache_poi_template_xls.pdfIn PDF document text
    • http://pumajuxav.rf.gd/asp.net_mvc_interview_questions_code_project.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/35657077006.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/android_10_huawei_y9_2019.pdfIn PDF document text
    • http://putojoner.rf.gd/guvenajifamuba.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_off0000ed1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1B 5656 bytes
SHA-256: 5074681cf0e19bfde931484fdf2763689971878c7a7cefe6ff658384ad4c74d7
font_01_sfnt_off00010031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10031 11064 bytes
SHA-256: 40ef93cd7588ca4acf1335902271ac77fe9a90b02dd764e142fa29b16ee8f5f2

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