Malicious PDF — malware analysis report

Static analysis result for SHA-256 630b6a4dd6a4b8f6…

MALICIOUS

PDF

80.8 KB Created: 2021-03-10 06:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 214b80683c8f707e4d4b098826e2e58f SHA-1: 4f8d4a3c455775f6feccc0ef05f61c95c901ca54 SHA-256: 630b6a4dd6a4b8f687dc43434a06831f054639bf0737389758e5a41cd4a536fd
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'adolescent depression fact sheet', indicating a social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/123?utm_term=adolescent+depression+fact+sheet PDF link annotation
    • http://giocodigital.website/ratio_of_perimeter_and_area_of_similar_figures_worksheetgmuhr.pdfIn PDF document text
    • http://zutelotojenexop.getenjoyment.net/14551728415.pdfIn PDF document text
    • http://bestunew.xyz/will_be_the_center_of_attention_boulderih3uf.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/rigonudu.pdfIn PDF document text
    • http://remontlegko.info/english_supplementary_reader_class_7_guideqpwhr.pdfIn PDF document text
    • http://wufamega.scienceontheweb.net/scosche_loc2sl_owners_manual.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/sivejaxapudapelifedes.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/luramamelolem/valel.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/what_is_the_process_of_cbt.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/ccleaner_apk_android_2._3._6.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/big_little_lies_soundtrack_season_1_episode_2.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/45553829223.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/sheet_music_ashokan_farewell_violin_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/wonizowuzorogog.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/sql_server_express_2017_size.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/how_to_make_my_own_holy_oil.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/delta_unisaw_serial_numbers.pdfIn PDF document text
    • http://mifotabelimudon.myartsonline.com/1661759088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48542ae5-1ad1-4b6c-aada-97b6ee5f6b35/biochemistry_macromolecules_pogil_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26e5dd7d-e296-442b-b970-db06ca5641f9/38974905307.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/93605534039.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/annamayya_movie_songs_lyrics_in_telugu.pdfIn PDF document text
    • http://romofimor.onlinewebshop.net/technical_analysis_trading_training.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_off0000f203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF203 5020 bytes
SHA-256: cd27eacc7db863ed38cd867fc8c9cd10983bdbccdfdb5623583a9e17469c0f3d
font_01_sfnt_off00010306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10306 10704 bytes
SHA-256: 8bfee241dbfe2185e39996a6b3316e76be4fb6984aa6d263efa38cf93c6b5d43
font_02_sfnt_off000127c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127C1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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