Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dace687b5236706…

MALICIOUS

PDF

72.0 KB Created: 2021-03-27 22:36:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: f7f3f995571855f35e999a330ea71668 SHA-1: 38d9b3f89f17980d5b883a7ace3898a2f434de05 SHA-256: 4dace687b52367069a952f2ca0e01d4cbf5041a7aa9a1947e44f97d2bae386e5
96 Risk Score

Malware Insights

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

The file is a PDF containing embedded URLs, one of which is flagged as a potential phishing or malware distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a malicious website, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/award?keyword=ap+sachivalayam+previous+papers+pdf PDF link annotation
    • http://fupemagis.mywebcommunity.org/cuanto_es_500_gramos_de_harina_en_cucharadas.pdfIn PDF document text
    • http://pokypka.xyz/public_health_administrator_salary_per_hourtfzc5.pdfIn PDF document text
    • http://polfact.site/63147076935mxi3w.pdfIn PDF document text
    • http://fejiximodanu.mygamesonline.org/adobe_photoshop_cc_advanced_tutorial.pdfIn PDF document text
    • http://pristav.pro/xorunanoxanabugoweloet0gi.pdfIn PDF document text
    • http://giwewigipebi.medianewsonline.com/berliner_platz_4_arbeitsbuch.pdfIn PDF document text
    • http://rarojuso.22web.org/36024884726.pdfIn PDF document text
    • http://taher-tcac.com/essential_elements_clarinet_book_1_free_downloadxkt2h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_d45e1bd735844796a875701980e00a2e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/52011675902.pdfIn PDF document text
    • https://a97cc435-ef8e-4ffb-8544-4b9c0bda5a6e.filesusr.com/ugd/7ab440_14f872eb4ed74e0b912fa499984aaa18.pdf?index=trueIn PDF document text
    • http://vutekumini.epizy.com/rijizivaxivotedezovadiw.pdfIn PDF document text
    • https://cf62593c-3f62-494e-9ef9-3c2a63ead7d7.filesusr.com/ugd/93dae2_f13419ec31f3442690a69b45fd7ad5e4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/how_to_scan_photo_from_canon_printer_to_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/oster_pro_1200_plus_blender_manual.pdfIn PDF document text
    • http://varunogozanog.rf.gd/66803746117.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/amiga_1200_schematic.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/guided_tour_l_g.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_off0000db31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB31 5548 bytes
SHA-256: 702e427fa3c26ba992ac6f4b3efb09c705441b1e85a9786e28f79ebcdbb891e1
font_01_sfnt_off0000edf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF6 10560 bytes
SHA-256: ccbe328e729229b931391be82a3ea59b3bb67f71cc1d0fdbffafbc554493e379

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