Malicious PDF — malware analysis report

Static analysis result for SHA-256 bceaea5da7049248…

MALICIOUS

PDF

87.7 KB Created: 2021-05-23 23:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c891637a920e9205fcbbb0b796705c2f SHA-1: 849f2f4afb522cb8e3c275ca9357506123fc9a7b SHA-256: bceaea5da70492483de31a69bba30293ec003f7d2ccbee63c5fe06f41561297c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://soxebez.ru/strik?utm_term=kalimba+tutorial+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481409/normal_605c480647908.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455669/normal_5fdfc60bb510c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383704/normal_5ff20ab38cc87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405674/normal_5fde4ec0df00f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_60339435b674f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470224/normal_600dd98c2aa2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5fdbb4b33b511.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383804/normal_5ff63a71adc6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495843/normal_602addbcdf8b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_60419a7d5e1fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_5fe66a51626b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494681/normal_603bef72e0aeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/fowuresekus.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/kalinda_and_lana_episode_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f22bd507-6be0-4597-88d7-cbc844f901cc/windows_server_2012_standard_iso_download_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/aaruthra_tamil_movie_tamilgun.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/do_interior_designers_get_paid_well_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0481f28-9e53-469a-9ad9-2878b1d73f1b/83810244588.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/bamboo_bed_sheets_edmonton.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/battletech_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/loriviserobunasum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e22e8ca5-da2c-4650-beed-9a1f5ceb8283/sabadakerajemejavido.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/muladitezivilaw.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/the_mist_stephen_king_movie_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a420b20-700b-4342-a97a-749e62b09a56/how_hard_is_accounting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97161f1d-189c-46cc-bd1e-66cbad1fe7b0/what_is_mainframe_computer_definition.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10319 5120 bytes
SHA-256: cdef391179043e2da1fb5413f7c338e00bd3e135412da9939a7887d12ba5bf17
font_01_sfnt_off0001146c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146C 11436 bytes
SHA-256: 9a14d6d52b65054ae90a8b27717022385b56e2a92989fcd6ab947960acf15280
font_02_sfnt_off00013b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B92 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd

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