Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdb734ace0793582…

MALICIOUS

PDF

177.5 KB Created: 2021-03-22 06:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 07cfb5adf4c7842bbb45039ec5b40ae2 SHA-1: 2762b3e9e70e093ead57722381785f1461811a09 SHA-256: cdb734ace07935829bdfdc3167e63935f44cbf1e696c7b50c96b98161ec40154
96 Risk Score

Malware Insights

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

The file was identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing. The PDF structure and embedded content suggest it's designed to trick users into visiting this external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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/strik?utm_term=washington+football+team+helmet+logo+2020 PDF link annotation
    • https://kesizibewasi.weebly.com/uploads/1/3/0/8/130813921/jofarekurelise-lidekefegovef-namemedexekad.pdfIn PDF document text
    • https://wojulifurezusek.weebly.com/uploads/1/3/1/4/131438898/sonabi.pdfIn PDF document text
    • https://mepogazab.weebly.com/uploads/1/3/4/5/134501519/gejedojuzufuro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383571/normal_60434bd49ed79.pdfIn PDF document text
    • https://wepoduxusuduxi.weebly.com/uploads/1/3/4/3/134306179/08d6396bf.pdfIn PDF document text
    • https://xoxefalumigak.weebly.com/uploads/1/3/4/5/134527234/91a23cfe4e85c20.pdfIn PDF document text
    • https://lososegumupabi.weebly.com/uploads/1/3/1/4/131407698/vozuzewutuv.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/51ed6bf3358af9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488604/normal_605533419f70a.pdfIn PDF document text
    • https://nitafigiwulizo.weebly.com/uploads/1/3/1/4/131406945/3151129.pdfIn PDF document text
    • https://fileduwefevara.weebly.com/uploads/1/3/4/3/134384607/59632307d442fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477401/normal_5ff915c803bf0.pdfIn PDF document text
    • https://xogegexisupu.weebly.com/uploads/1/3/4/3/134319275/fifarel_wirezoz_jejamip_gefutir.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/mijumomub/perafoduxawibenupalus.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/49893432585.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/41528592919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a760d9f1-5593-4ac6-bbdf-29aabf30b92b/98755844684.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/92576055610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccd4b579-9b0a-4b7b-8242-57e161a5947a/63329398121.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/morphology_the_words_of_language_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/41545401778.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/heartworm_society_feline_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22d766e2-91f6-4efd-8f31-3c5fca78dec1/mogojapuvadijibusuvezavo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c9f13b-b5c1-4e2f-b7ee-0293f9805156/top_interior_design_schools_in_pune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a1676ea-0998-4cf1-a37e-ad720524adc0/computer_explorations_in_signals_and_systems_using_matlab_solution_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/xonowarobovolesuwibib.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_off000279ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x279EF 5512 bytes
SHA-256: 76bddcb17de6f3b8c0cc11071a9cd9e3f9ddbfc164eab6de7cd24b0866a7a802
font_01_sfnt_off00028c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28C9B 12496 bytes
SHA-256: 4db85ecb68cbbf812b91ecdf19b57762b81452baace42fa885b88e5c0b23a3d7

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