Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fa064f2d04d4e7f…

MALICIOUS

PDF

76.0 KB Created: 2021-04-02 16:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 4c943d2381f5c9fedeb4e83a1c7b9932 SHA-1: ed2a6825f5f890c61d4f7bd7c69f6119a368256b SHA-256: 3fa064f2d04d4e7fc6e02ce12dd954a3679aba8fc1329eabeb414d6d5455b55a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URLs, particularly the one pointing to 'baarspo.ru', suggest a phishing or malware distribution attempt disguised as a search result for an educational PDF. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/wix?keyword=oxford+advanced+learner%2527s+dictionary+of+current+english+by+as+hornby+pdf PDF link annotation
    • http://gakawisogafuga.mygamesonline.org/the_chrysalids_summary_chapter_16.pdfIn PDF document text
    • http://pelegiromo.22web.org/les_carbamates.pdfIn PDF document text
    • http://pulezuxelad.22web.org/all_movies_apk_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/xibidodoko/hpiahj1/mobogowabusesogakepalugow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_602c270d87802.pdfIn PDF document text
    • http://rijebipimaba.getenjoyment.net/wijigaleradinavufinuva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462339/normal_6051626265a50.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/kovalugugomutokovumivesir.pdfIn PDF document text
    • https://cdn.sqhk.co/gutemokerezo/ihmheck/repost_app_not_working_for_videos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425913/normal_60538b030efe2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413980/normal_5fc6dc5253dfc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kegigija.atwebpages.com/accounting_for_small_business_owners_tycho_press.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/gitimu.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/parufutojogadoselukazog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0715cd6-8976-42f1-811a-ca7ebc5c477a/31201063762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04a94903-9d25-4fb5-8255-6a476d8debe0/15356788413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a5d246a-2b5f-4683-8ce3-544b727332f5/do_petsafe_collars_work_with_invisible_fence.pdfIn PDF document text
    • http://zenomidesedi.rf.gd/how_to_replace_kohler_faucet_aerator.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/brand_awareness_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea92b32f-3de1-44f7-827d-0b6ef5041a23/harry_potter_yla_camara_secreta_resumen_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/sc_stephens_thoughtful_read_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52348eef-1bea-46af-923f-5280617a7e3d/essentials_of_computer_organization_and_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/68746118005.pdfIn PDF document text
    • http://wagimaparojova.epizy.com/1043463373.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_off0000e8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CD 5848 bytes
SHA-256: 6efa00b8ac370bc0a4244861bf7d94bef41d1e6b382102655e227c4dc7fc75a6
font_01_sfnt_off0000fcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC3 11044 bytes
SHA-256: 240bcfaaeec2db476c418b76fe02508144b7db21321c2a56d34dfe1d487b7df0

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