Malicious PDF — malware analysis report

Static analysis result for SHA-256 2965eb9faead76ec…

MALICIOUS

PDF

76.7 KB Created: 2021-03-23 07:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5536369aa58e9b7cc13d03ee95e60b25 SHA-1: 14993b2ecc3062b9a20f4fca50007e74d4eea423 SHA-256: 2965eb9faead76ec34db9ca0f042fc6d6a1704b66d7ce5e60d6763c263046c75
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://nipisod.ru/wix?keyword=beauty+and+the+beast+musical+cast+of+characters PDF link annotation
    • http://operationhomeplate.com/76592334048wqphg.pdfIn PDF document text
    • http://salleapp.xyz/44052291977zdz1d.pdfIn PDF document text
    • http://lolkek.xyz/construction_bidding_processcagfx.pdfIn PDF document text
    • http://luminar4-download.xyz/what_is_a_2006_equinox_worthtvlhh.pdfIn PDF document text
    • http://tryse.xyz/pafuzuxuziweforanaviwvq3w.pdfIn PDF document text
    • http://pepojen.iblogger.org/crystal_reports_totext_leading_zero.pdfIn PDF document text
    • http://fumigatoff.online/how_to_connect_bose_sounddock_10_bluetoothauvtr.pdfIn PDF document text
    • http://scriptbook.xyz/spesifikasi_game_cyber_hunter_androidt9lb0.pdfIn PDF document text
    • http://italiahot.fun/snow_white_with_the_red_hair_fanfiction_obi_injured3nd4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://05491ccc-77c7-428b-9c25-74f2c6c50d4a.filesusr.com/ugd/d51d36_8ef0fc8a7f5b486c89d96d37ee7c84d6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/blackberry_link_pour_android.pdfIn PDF document text
    • http://xatabiraluxuded.rf.gd/sorabotolojex.pdfIn PDF document text
    • https://000bb656-a8cb-4e8b-9327-0b0ec99f56fe.filesusr.com/ugd/3f812e_a15fff5e973e4a95ab9b130c185defdf.pdf?index=trueIn PDF document text
    • https://ff06b2c9-6223-4357-b4d5-1bf3807c749f.filesusr.com/ugd/717131_26d40b63d796415d84a9dd67c6b39150.pdf?index=trueIn PDF document text
    • https://8767aa75-4bd5-48c0-94ca-24e983238001.filesusr.com/ugd/debdc1_ddf52a32838c43c486d94ffb47770ce6.pdf?index=trueIn PDF document text
    • https://814bd5e1-0b6f-40f8-b2e9-6ab0015c5eef.filesusr.com/ugd/cc77ff_1a5753b8e14d4184bf7185ca1dd95cad.pdf?index=trueIn PDF document text
    • http://zisubaripuxiba.epizy.com/bamumugetaz.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/to_all_the_boys_ive_loved_before_cast_2.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/british_medical_journal_case_report_format.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/wd_my_cloud_backup_software_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB34 5552 bytes
SHA-256: 0b116f64017e6a99b0e3d23fc3ec5d30e1470edda4063a8f082854738f660942
font_01_sfnt_off0000fdf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF2 12604 bytes
SHA-256: 92389dd507651039c971a111816e2f6b4e73777cffa133df7673536a6560ba4b

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