Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c9f64aaff7fab8…

MALICIOUS

PDF

75.2 KB Created: 2021-03-22 20:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 45873e31c3ab4860136e4aa0c9bb77d4 SHA-1: 7f84147b6ec1002c06227fc1b2b91ee9fc1ee834 SHA-256: d0c9f64aaff7fab80d5b1d8e9ad3138d60248e61ef83490db39db2050b2db58a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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://jottigo.ru/award?keyword=jpg+to+pdf+app PDF link annotation
    • http://rivepozepuxar.mywebcommunity.org/17130508460.pdfIn PDF document text
    • http://suporefebakibur.mygamesonline.org/57972431937.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/xWgfTFg/fly_fishing_lifestyle_brands.pdfIn PDF document text
    • https://cdn.sqhk.co/minutakumu/ijjgGha/blackberry_z3_firmware_software.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/vexeliku/a3_laminating_sheets_officeworks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f09d517f-03be-41d8-bc31-86d4c7d3c6a8/namaxedugelemobaner.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/zubasuvadinojizimodiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f837e471-fb18-4d1f-91a5-cf9ce56fad8d/best_books_to_read_for_beginners_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/33238722668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7050b114-cb07-4346-afca-3e16aa5f001b/tazopaz.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/45889846651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b98c0d3-ee5b-41e7-b78c-c7dc9c423608/does_the_miracle_morning_work.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/vive_colombia_viaja_por_ella_tours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5c0cab1-dbd1-4b26-9e13-3c6a19c8247c/ragilidukekomikiwinuxizim.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/65449883538.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a473ac68-9f3d-43f9-9c1a-1f93e05a6a19/88738721441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4034a8c-b7a4-4970-93d0-c9dbdef169b8/refowipajomexupapo.pdfIn PDF document text
    • http://wozimape.onlinewebshop.net/john_deere_z425_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/alveus_formic_20.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/aaron_sorkin_masterclass.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_off0000e9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 4892 bytes
SHA-256: 376f7a10cd31c2dcfb5f4aa40f918b26a392ed435ce7967426ed9d93254b5626
font_01_sfnt_off0000fa7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7C 10600 bytes
SHA-256: c5ca52c04c4808dc4508bc86f6974331a1f6f85f3ddedc7a1f552740a446ef9e

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