Malicious PDF — malware analysis report

Static analysis result for SHA-256 941d5fb60453146d…

MALICIOUS

PDF

129.2 KB Created: 2021-04-04 08:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5fe26e0f701226b3fb76d8a3020c1a49 SHA-1: 1b4720b04a89ec2d000e7ff64abc33490faaecb7 SHA-256: 941d5fb60453146d02ba005202b78c49690264315f76415f9160e205997ac370
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 0.9987

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://xajibur.ru/123?utm_term=awful+to+contemplate+%25E6%2584%258F%25E5%2591%25B3 PDF link annotation
    • http://testersairf.xyz/gaxasaxav5j7w.pdfIn PDF document text
    • http://christinaanddavid2019.com/research_about_academic_performance_of_students3bpjn.pdfIn PDF document text
    • http://italia-doc.space/zowexusurufimumamikelamogebpm.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/legenapi/does_calculus_2_get_easier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb8ae57d-bbcb-4b85-ad03-44cf6abb4bb4/what_is_r_for_ideal_gas_law.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b30feaee-dc8e-47f3-a7c9-a56bd205b7e2/xotatekevamumogot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f6297c2-c040-4343-89f8-4ffa4f2c55a9/nancy_mairs_on_being_a_cripple_lexile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0acb368f-f2bd-4599-944e-5104f8e2cea9/washington_dc_metro_map_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ff42b10-d712-4c84-bc09-50b7d87a1ace/61691046565.pdfIn PDF document text
    • http://tojederetesez.epizy.com/differentiate_informal_and_formal_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/686666b8-a850-4674-81b3-cf72dcf68131/duwelapokasomoruv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/050417b9-829e-4d82-94d8-1e60e25a1ff9/walanitexosubawosanede.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/32413111214.pdfIn PDF document text
    • http://xixonuw.rf.gd/shark_lift_away_dlx_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b4120e-2c5e-40ef-b100-75090dff8633/paragon_digital_defrost_timer_wiring_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/43947510877.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/how_to_calculate_cash_dividends_in_nepal.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/gesazajiron.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/inference_worksheets_grade_5.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE223 56532 bytes
SHA-256: 904ed9adc479e1f2783646db9862ce95e00999f2b95007fed871a121842944cf
font_01_sfnt_off00018dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DCD 3404 bytes
SHA-256: fda9c28f1fa6d4e86704d4719b08c9c6bf3d7252727147e041db32bb5a36ba54
font_02_sfnt_off000199da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x199DA 4800 bytes
SHA-256: cf42abfbff1d064f398be5c2d63cb7017150d077b6c9f23349646d6c50a9eca1
font_03_sfnt_off0001aa27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA27 11432 bytes
SHA-256: 50971468cc935b5aeb26a0ad0d2b23204b22cd481d6304752aedb1aa54deab5c
font_04_sfnt_off0001d14d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D14D 16060 bytes
SHA-256: 309a3b1fceaa03c0c9bd2e8b4443fcfd5b986ddbb92b7334120c253d92888431
font_05_sfnt_off0001e5df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E5DF 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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