Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded0e0bbb87b8b12…

MALICIOUS

PDF

75.7 KB Created: 2021-03-22 07:57:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cb2fed65444d346305b025bfc6d508b SHA-1: 8195fcd7ad7d4583204fbcf5a8d96369b075d9aa SHA-256: ded0e0bbb87b8b12774e91ac3f46eca34a800122265c0e70c432bec6519f5a5c
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm or phishing campaign designed to redirect users to potentially harmful websites. No scripts were extracted, but the presence of numerous external URLs is a strong indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=town+of+clarkson+transfer+station
    • https://cdn.sqhk.co/xajigekus/hf3jhhh/venugezasamoxuzudufoxu.pdf
    • http://rijoginijamibeg.mypressonline.com/away_in_a_manger_song_lyrics.pdf
    • http://dkmz2.club/jncia_fwv_study_guidew04ul.pdf
    • https://sefokuto.weebly.com/uploads/1/3/0/7/130738721/wiwapixeras.pdf
    • https://mikexilip.weebly.com/uploads/1/3/4/8/134868220/xekerusizesu_peforodusite_kipedu_zodezivisa.pdf
    • http://pifafixejizigu.scienceontheweb.net/27354503726.pdf
    • http://spoonnumberone.xyz/86045556134reqg3.pdf
    • http://bachanalytics.com/lenivavomakijunk8k0s.pdf
    • https://rukegimamu.weebly.com/uploads/1/3/3/9/133986924/fokit.pdf
    • http://bottlechainworld.com/jiwegaruzadudubipudawaxidytc0s.pdf
    • http://mavito.online/pozonuxobutojifiwutegofmnimd.pdf
    • http://romeita.space/sejarah_peradaban_islam_pada_masa_dinasti_abbasiyahy0yyo.pdf
    • http://wide-do.top/dd_5e_monster_card_generatorr4hc1.pdf
    • http://testertumentum.space/63795299077a0zyy.pdf
    • http://xipodijajul.sportsontheweb.net/jamusoz.pdf
    • https://cdn.sqhk.co/ratevusur/jTu9Mql/jokonedivizuz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_0f2c1106532d47a9bfc899ec0121378a.pdf?index=true
    • https://e5aadbcf-511f-4ee2-989a-4410a22eeed0.filesusr.com/ugd/64930c_fa34cc31005048aeb88fae2139a3ad47.pdf?index=true
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_20bfe62f7c63469192015db205be7f78.pdf?index=true
    • https://c827806f-f9bf-4fd3-a4ce-e487c020fa79.filesusr.com/ugd/6fd45c_9f4c431b4ebc4f3394137e93ca441982.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eac7.bin
1637af5e2f00b321d1149b02d15ab1c3c16464cbf7c06dd0d008e5f853ad4966		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC7 4980 bytes
font_01_sfnt_off0000fbdf.bin
b75115a3dbe36f67309b3f877146c256e684944d7dccfcb324f42f3061c21974		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 10976 bytes

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