Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a365a59a586f8aa…

MALICIOUS

PDF

79.4 KB Created: 2021-04-01 05:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 29be04a384a6c9bcce358e7a8e28a017 SHA-1: 104e424a74bd32e0d3b7ef254913129d2ca029bd SHA-256: 3a365a59a586f8aaed446bceec557b08fbc203c5bdb93e8fd009e2e7d81740f3
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 0.9995

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://zajinet.ru/123?utm_term=trane+chiller+controller+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4402519/normal_5ff0f5552217e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389358/normal_5fd77002146dd.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/8iauBif/ffxiv_outfoxed_not_spawning.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/c0xTlji/94180150239.pdfIn PDF document text
    • https://cdn.sqhk.co/pipujevi/haP1Bjw/dabuperafuxupizajopa.pdfIn PDF document text
    • http://datiwufirul.medianewsonline.com/b._com_books_free_download_mumbai_university.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/high_school_chemistry_textbook.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://uploads.strikinglycdn.com/files/238fb582-54c0-4e5a-bd1e-516ba671b746/nupewe.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/86292036452.pdfIn PDF document text
    • https://0c6b2c5e-c852-454c-8c01-bea24f6181fd.filesusr.com/ugd/b97644_87f4619b66ff4c989212d67b7674f24f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/90854031336.pdfIn PDF document text
    • http://sazebufaz.atwebpages.com/luis_cernuda_las_nubes.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/how_to_format_a_professional_letter_of_recommendation.pdfIn PDF document text
    • http://wetukanezin.atwebpages.com/90095618646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce8ddc3b-455e-4eff-affc-a413ff1ae86e/5965254193.pdfIn PDF document text
    • https://8b8c7005-3af0-45a1-8e5b-a6902caa9335.filesusr.com/ugd/dbd7d9_e2e790c60c87451d810273751847488b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/genedesowul/informer_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/imperative_exclamatory_sentences_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27ed60ef-a482-4741-9bda-5036de7c8200/osceola.k12.fl.us_employee_portal.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/46221491055.pdfIn PDF document text
    • https://85ed388a-52e0-4e79-9737-9d4b769dda71.filesusr.com/ugd/bb10c5_d6bf57e23af14594a6a4f99b96219500.pdf?index=trueIn PDF document text
    • https://04a9e765-cf69-4035-9b9a-998d8fb4e692.filesusr.com/ugd/8c5016_db334978363b495799208e03fac65df4.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED92 4692 bytes
SHA-256: 6b33a190713f87064a1db93bd80b2e0d621cde81dd1d58b85be07e5aef21b564
font_01_sfnt_off0000fd40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD40 10792 bytes
SHA-256: 4a97ff7097a10ba8db9dcabc19dcd8790e7ada1ea092bc5cf8069018d1c36870
font_02_sfnt_off00012247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12247 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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