Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0cedd7351fa70b…

MALICIOUS

PDF

90.4 KB Created: 2021-03-08 05:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: a23d91ed83c511c8c180cd63c93cfcb1 SHA-1: 8bd228080eef0d62a06fc8778a4080f9512e3731 SHA-256: dd0cedd7351fa70b33998d447ce2dd6f5a0327a154ca7ae66e085d1e82a2c9ed
104 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URL pointing to a suspicious domain, which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, contains indicators of urgency, suggesting a lure to entice users to interact with the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://xajibur.ru/strik?utm_term=survival+food+list+for+3+months PDF link annotation
    • http://bemixavojutok.iblogger.org/96792357746.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
    • http://tinuzutajalik.epizy.com/bug_s_life_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f0790d9-1067-4812-9db9-b86990ffd0d9/99515397338.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d47ec23-f5f4-4d6e-8762-ef46fcadcadf/26406766076.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/rasufupejitadufonexa.pdfIn PDF document text
    • http://zedotedifajo.epizy.com/ain_t_it_funny_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fea5ae2-053a-4530-bcd8-53f9473f833d/how_to_service_webasto_heater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08d53b6e-8830-4b18-a56d-e660e9a0fa6b/3_main_design_principles_of_object-oriented_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/in_christ_alone_presbyterian_hymnal.pdfIn PDF document text
    • http://vutegug.epizy.com/13230027698.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/fannie_mae_freddie_mac_loan_modification_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/common_core_reading_comprehension_worksheets_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7acf8444-27e2-43ec-acb4-61ad8bc48504/how_to_tell_if_turntable_needle_is_worn.pdfIn PDF document text
    • http://vojuzegi.epizy.com/analyse_the_structure_of_a_text_examples_4th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af76220e-894f-4462-a956-8c328159b3f2/38017169338.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/97282876138.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/dermatophytes_photos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d20e00c0-ac20-482e-b265-3259fa1f7d86/jack_and_beanstalk_story_outline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cb9a940-b229-42e7-915f-df3a1ccd2f29/sadiselora.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_off0001188b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188B 5240 bytes
SHA-256: 9445855c55bfe4ae61e7e6071913bc9728c4d3613dfe25fcd93fab005eb328de
font_01_sfnt_off00012a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1B 10520 bytes
SHA-256: bcb2a1e105cd88eed5f03f95523685486dc39e1c9f68c11ab180f12ac373c9d7
font_02_sfnt_off00014ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DED 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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