Malicious PDF — malware analysis report

Static analysis result for SHA-256 b546706eade33fdb…

MALICIOUS

PDF

80.1 KB Created: 2021-03-13 17:15:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 39cee760b053b49088eea6c601b1cf8a SHA-1: 9a311a5b2886c0f57cf549f67151da912146a37b SHA-256: b546706eade33fdb99f8b674d68a4492ff04a5faac2bf4f69d72a772e784f048
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, indicating a likely phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection profile point towards a malicious document, likely delivered as a spearphishing attachment.

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://lozipotod.ru/wix?keyword=geologic+cross+section+youngest+to+oldest+answers PDF link annotation
    • https://gifavunebaxagem.weebly.com/uploads/1/3/4/3/134358660/wupakagalatoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/gdjjJie/ria_money_transfer_online_login.pdfIn PDF document text
    • http://giwitijudaleka.mygamesonline.org/pujin.pdfIn PDF document text
    • http://zaxegod.getenjoyment.net/how_to_round_loom_knit_socks.pdfIn PDF document text
    • https://cdn.sqhk.co/labokezugumu/hf6AgiH/capstone_logistics_production_pay.pdfIn PDF document text
    • https://mitigovoponezix.weebly.com/uploads/1/3/4/3/134375948/55457638dd46.pdfIn PDF document text
    • https://sarisiwubaj.weebly.com/uploads/1/3/0/7/130739508/gopaxiso_wuradoxebebigip_nalovisijurek.pdfIn PDF document text
    • http://pelabinowoguk.getenjoyment.net/les_adjectifs_possessifs_exercices_a1.pdfIn PDF document text
    • http://vasakuso.sportsontheweb.net/69061407231.pdfIn PDF document text
    • https://busonuvawariba.weebly.com/uploads/1/3/4/3/134355681/zatogajekosa.pdfIn PDF document text
    • http://tofotibuwul.sportsontheweb.net/elective_mathematics_syllabus_for_shs.pdfIn PDF document text
    • https://zodefamebatum.weebly.com/uploads/1/3/5/9/135967531/802d01766e7.pdfIn PDF document text
    • http://wirobigi.medianewsonline.com/bafg_rckzahlung_freistellungsantrag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/meeting_plan_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/2015_buick_lacrosse_car_manual.pdfIn PDF document text
    • http://dapufojutujat.atwebpages.com/how_big_are_bar_pool_tables.pdfIn PDF document text
    • http://tokozod.myartsonline.com/what_are_the_3_words_that_describe_the_grinch.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/how_long_do_you_cook_a_picnic_ham_in_the_oven.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/algebra_1_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/89295942510.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9B 5216 bytes
SHA-256: 37ddd1af85545fd667ffc8585eeac6e5c6618456da09287fbbc4af9213d671e1
font_01_sfnt_off0001007e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007E 10876 bytes
SHA-256: da6c3a4d3798ca1402d8925bed72f31c8615f86ad47e9e6affb390fbf7ff8fc0
font_02_sfnt_off000124d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124D9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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