Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3b384570cd4e530…

MALICIOUS

PDF

75.1 KB Created: 2021-03-17 22:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7fdb5ca00c375fa57cdc2f63e2aadeab SHA-1: b954cc0606cd9001df0a5fc3a30ef01e4b619f31 SHA-256: c3b384570cd4e5301c0dbb8bb662472a50f96d8068b6072593d668ead05637b3
96 Risk Score

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 0.9997

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://crophysi.ru/123?utm_term=rocket+league+switch+multi+platform PDF link annotation
    • http://copytoshka.ru/53219947164qkwyb.pdfIn PDF document text
    • http://pocki.top/womasuluvul745hl.pdfIn PDF document text
    • https://zozabamefopofa.weebly.com/uploads/1/3/4/2/134234868/bc78c589f.pdfIn PDF document text
    • http://nazhivy.net/573627432845n53y.pdfIn PDF document text
    • http://bupro.asia/xikerimaxewoxikezubaqfj6d.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/70832616153.pdfIn PDF document text
    • http://nesakud.mypressonline.com/witcher_books_vs_games.pdfIn PDF document text
    • https://vudexugir.weebly.com/uploads/1/3/2/7/132710723/perorisedivomuj-somexaka-verinud-bokivixotapo.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/tasufagijaremo/redogafusotab.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/43290261489.pdfIn PDF document text
    • https://4b3b4da4-1145-40fd-8a04-0ac29766dab0.filesusr.com/ugd/6c6203_3c44601f92da4aa5adfaf84974812508.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/24267547540.pdfIn PDF document text
    • https://b564fea6-732e-489f-a029-a72dc6590de2.filesusr.com/ugd/6a4619_e1ac37940de24177b912cf14142343bc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/free_antonyms_worksheets_for_kindergarten.pdfIn PDF document text
    • https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_52f39355619d4e0dbe34f6c8803aacfb.pdf?index=trueIn PDF document text
    • https://5926284e-b61c-4ed0-95e5-27b9feedd2c3.filesusr.com/ugd/50c35f_88798414a5eb4b34805c53c7629b4a9a.pdf?index=trueIn PDF document text
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_6a8cdbad5d0040228a22f9e0e5651061.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/iphone_11_vs_android_camera.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/private_candidate_registration_form_2019.pdfIn PDF document text
    • http://woranuganavot.myartsonline.com/wamepa.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/7613924520.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_off0000e6f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F6 5592 bytes
SHA-256: 125ff0b719627b8e38b22a51d056764b6c8b82793a51547d471961ca77d8f695
font_01_sfnt_off0000f9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9EF 10916 bytes
SHA-256: 9d4c694833110b28269c9a0bf697c2476dd41b75ff0f373d2d49c6c87fd96db2

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