Malicious PDF — malware analysis report

Static analysis result for SHA-256 baec1cc21187705b…

MALICIOUS

PDF

77.6 KB Created: 2021-05-21 02:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f830ebf9b083929b6a5ea4cdeb234e4b SHA-1: 71293b1822c59ce81f1ff441eab8ac1d199551af SHA-256: baec1cc21187705bddac1c85a9da927877abe94d748ff9757f32c838c5b9019b
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 0.9992

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://druttle.ru/strik?utm_term=oraci%25C3%25B3n+compuesta+subordinada+adverbial+temporal PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387706/normal_5fde6ce334398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_60636b1bc6a2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454670/normal_603f48ba64d9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479254/normal_5fdb1881b31eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375199/normal_60241bba726d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373999/normal_5fc85514944c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478438/normal_6049da3ea9dab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414156/normal_5fcaa3c9e3911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454049/normal_5fda437c77e4e.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/piwupevivotixi/samsung_induction_range_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/zinux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3826d856-f61c-48ea-9c8b-061788cff960/the_norton_reader_14th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfc344c2-013e-413d-b8e9-f0aaba556067/73320930131.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/end_of_the_world_movie_2019_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/jelosagemifarabowo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eeb90d4-94fa-450e-9d4f-4d969bf24743/las_medias_de_los_flamencos_cuento_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/9075549281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a70c20e7-6b61-4b60-b64b-457ab80e9c03/math_textbook_6th_grade_course_1.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/the_circular_flow_model_applied_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/negupukigupagezuvij.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/47555085435.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/what_did_the_2nd_estate_do.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/zusokexopilujolured.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_off0000ebd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD6 5580 bytes
SHA-256: 6bfe9c010fe3e1699d7d64f765fdf96104b8e44f346851d6d0aeeff030cca89a
font_01_sfnt_off0000fe6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6F 12252 bytes
SHA-256: baf7672d85e954a905ce5cbac68dad1c044cc2c7a0b8b131bf6bfc5766d93b7a

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