Malicious PDF — malware analysis report

Static analysis result for SHA-256 279eb5e13dc0528f…

MALICIOUS

PDF

67.4 KB Created: 2021-03-23 02:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 31126a090b33698352448a4d20a6fa10 SHA-1: 87f9184cd873716c3cc3732ac6b27d83fe6dd962 SHA-256: 279eb5e13dc0528f78722d1d0dac20169e0b9ba82cc66ed90ab2412d33771a8f
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 0.9996

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://baarspo.ru/123?utm_term=adobe+acrobat+chinese+font PDF link annotation
    • http://zisezamerares.mygamesonline.org/reading_comprehension_worksheets_esl.pdfIn PDF document text
    • http://nunovoxiwanafuz.getenjoyment.net/tinirofumudefovimezer.pdfIn PDF document text
    • http://gakawisogafuga.mygamesonline.org/neonatal_sepsis_guidelines_2020.pdfIn PDF document text
    • http://korogesubelokut.mypressonline.com/cuantos_centimetros_cuadrados_equivale_a_un_metro_cuadrado.pdfIn PDF document text
    • http://xilenemivagola.mywebcommunity.org/2nd_order_differential_equation_practice_problems.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/29505442735.pdfIn PDF document text
    • http://jidokove.scienceontheweb.net/wendys_employee_handbook.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/kujesulad/what_is_pst_migration_office_365.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/code._org_star_wars_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/96216711702.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/authorisation_letter_india_format.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/82449102264.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/pivef.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/best_mid_range_android_phone_2019_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/gleitmo_800_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/investigative_report_template_free.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/anatomy_upper_limb_mcq_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/aravalli_range_information_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/kokifes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d57ac64-329f-42c6-ba2e-d916f764dbc0/vokuxikoxebifakunoxef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df491573-1041-4368-902b-a5333029bc89/jageta.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB06 5208 bytes
SHA-256: 41fb32730009ab287c346369f63692fafbb1d1224e940a03a7bd905a429ac5fc
font_01_sfnt_off0000dcb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB6 9872 bytes
SHA-256: 236469c00cf4477336b14930709fce968f3d781b401b803f74bb20823a9c051a

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