Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd3df08e7d9902b…

MALICIOUS

PDF

101.7 KB Created: 2021-03-20 15:04:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f29773a0a028e60870d1c5f6b93d92d7 SHA-1: 674a2a6d03ad4ab24e5711fd3c51a3fa1822beb6 SHA-256: 5dd3df08e7d9902b0f94ea73040886f2512d88c6cda2deea5ff46e81ea7a0b52
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to 'anti adblock killer chrome'. The presence of external URIs and the ML classifier's high confidence score indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9873

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/123?utm_term=anti+adblock+killer+chrome PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465125/normal_6034467472da8.pdfIn PDF document text
    • http://bewujasixi.mywebcommunity.org/44142864604.pdfIn PDF document text
    • https://cdn.sqhk.co/kefofepobam/ighbZhe/sijixidivezogi.pdfIn PDF document text
    • http://spiritstudio.ru/minecraft_tutorial_world_download_javaxcxmj.pdfIn PDF document text
    • https://cdn.sqhk.co/rirakibugo/gjeUOce/hungry_birds_restaurant_srikakulam.pdfIn PDF document text
    • http://reactivascotia2020.com/how_to_use_hoover_steamvac_dual_v_carpet_cleanerypw6o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463788/normal_601960cf37d4d.pdfIn PDF document text
    • http://groby-ritual.online/85590256876bt4dw.pdfIn PDF document text
    • https://cdn.sqhk.co/waxoxewanuvi/jg8jjhg/scp_173_voice_video_calling.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475219/normal_6016ac6227d70.pdfIn PDF document text
    • http://kobodesuwid.getenjoyment.net/year_7_math_worksheets.pdfIn PDF document text
    • http://xidasetetobuge.scienceontheweb.net/49567492143.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/how_to_increase_your_mental_toughness.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452398/normal_6047c463311b2.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/eFIieVz/feed_instagram_app_free.pdfIn PDF document text
    • http://baugroup.info/67609688472lp2sb.pdfIn PDF document text
    • http://subfamjtii.site/teronibujesagbr38u.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/tetenifeme/xatojibowawiromusawexo.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/hp_photosmart_c3180_scanner_driver_download.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/zoology_books_for_bsc.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/excel_tally_counter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/isley_brothers_music_video.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/integrate_x_cos_2x_dx.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/what_are_the_characteristics_of_realism_and_naturalism.pdfIn PDF document text
    • http://kugukokoner.myartsonline.com/kohler_20kw_diesel_generator_price.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/agsb_sixth_form_open_evening.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9A 4980 bytes
SHA-256: 340ee0bc8b74b4798bf1e7d8ce274347730fa2bb9bf8b355d696743b64a1c2bb
font_01_sfnt_off00013b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4D 10688 bytes
SHA-256: 478c16f3a9a39c6ae7750e1126ed13c48fdbcd118eac5b36a584b8d30e898c45
font_02_sfnt_off0001601a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1601A 17444 bytes
SHA-256: b9c07489e0906e548fd2321ea551ccb3831683513f6c0abb6df7e71ce3785494
font_03_sfnt_off00017a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A57 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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