Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc24d73e50ff6dc…

MALICIOUS

PDF

80.0 KB Created: 2021-05-14 21:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a616555472e4c7746a93cadb58184617 SHA-1: 2521ff5cbe5e96380602f36eefe3878f76af1e87 SHA-256: dfc24d73e50ff6dc082054d3d76a4e97225945b605eb11f1d43a38e29a85c831
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/strik?utm_term=verbos+en+ingles+presente+y+pasado PDF link annotation
    • http://vijexibat.mywebcommunity.org/pumeviperigenedaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489035/normal_6045dbdb2835e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467030/normal_5fe031ff12af6.pdfIn PDF document text
    • http://se-mrush.com/what_is_the_default_password_for_netgearsopzk.pdfIn PDF document text
    • https://cdn.sqhk.co/lilovenodi/dKiMNjg/xadeda.pdfIn PDF document text
    • http://drive4mclaneaustell.com/facebook_messenger_for_nokia_200ixhgf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463565/normal_60323409792f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465149/normal_6010e50940848.pdfIn PDF document text
    • https://cdn.sqhk.co/jafipago/jahfghJ/fusufujonobewojisugik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_605f3f04ae83c.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/levovod/kujogasineso.pdfIn PDF document text
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_c7612c56a1234ab98f1c4156c7763180.pdf?index=trueIn PDF document text
    • http://jagomizaf.atwebpages.com/burasazulenitorakokiw.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/8d_audio_songs_punjabi.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/805995070.pdfIn PDF document text
    • https://011f98f8-b45f-4578-a2fd-466b530f7845.filesusr.com/ugd/74e905_43bf598aa72e490f880e787b7c6eb454.pdf?index=trueIn PDF document text
    • https://6e6ad6c0-90f2-4367-a025-4e24aeda1d0e.filesusr.com/ugd/c9b7fc_44b2fba84da44fdbae2c6ae794d0bd57.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tugafebip/does_patron_deity_matter_ffxiv.pdfIn PDF document text
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_fb5c2a13489145b8b6d1cfa465a6a363.pdf?index=trueIn PDF document text
    • http://guseboses.atwebpages.com/mc9090_scanner_disabled.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEE 5332 bytes
SHA-256: 9abd52cdd403adbe00ddccc2ad3642ad6c384afe6f5d79ac03418dbfec418fe1
font_01_sfnt_off00010111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10111 4440 bytes
SHA-256: c068a8e55fa75ffd6bf2a2a09698f551a0c0f804cd92eb2fef9741fb3c05b768
font_02_sfnt_off00010cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF8 10896 bytes
SHA-256: a97f96d2241fd79d41f0a1cb9c0d05fd6b625c33706297e61341fed43042f104

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