Malicious PDF — malware analysis report

Static analysis result for SHA-256 00176efae6a2de4b…

MALICIOUS

PDF

74.5 KB Created: 2021-03-12 00:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 822453769d57d1422c7883aca68b1007 SHA-1: eba68fed545972ee2ae3b6ef42808cac8ce809a9 SHA-256: 00176efae6a2de4bfb53e0eb1fbc3aaa71b490c8008d9a4103bc528936163aa0
96 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, with heuristics indicating an embedded external URI. The primary malicious URL identified is https://jottigo.ru/123?utm_term=identifikasi+boraks+pdf. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jottigo.ru/123?utm_term=identifikasi+boraks+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368250/normal_5fe61dae18a10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_6032da0b7501e.pdfIn PDF document text
    • http://tryraisins.pro/80281200523azb3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445326/normal_6048582f7abf0.pdfIn PDF document text
    • http://demepujabad.22web.org/1_3_dipolar_cycloaddition_reaction.pdfIn PDF document text
    • http://rent-nout.site/free_guided_meditation_for_sleep_appbf1oj.pdfIn PDF document text
    • http://mkr-olimp.info/weight_watchers_flex_pocket_guidej7gui.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478655/normal_603061033f871.pdfIn PDF document text
    • http://spain50off.info/getesufufagokil9iuz.pdfIn PDF document text
    • http://libifutolile.iblogger.org/capresso_espresso_machine_instructions.pdfIn PDF document text
    • http://tixshopclub.fun/study_skills_exercises_for_high_schoolvtnxd.pdfIn PDF document text
    • http://trysoda.pro/degisoloxexoruwovezez21pfk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409244/normal_600ff16646d66.pdfIn PDF document text
    • http://malalij.iblogger.org/asus_p8z77_reset_bios.pdfIn PDF document text
    • http://crawlmqyu.space/how_to_understand_compound_interesty1tfn.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/lazesej/26150327379.pdfIn PDF document text
    • http://zetinivob.epizy.com/hikvision_cctv_camera_price_list_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/wigowosidu.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/18338122571.pdfIn PDF document text
    • http://zebigibozudival.epizy.com/47400458492.pdfIn PDF document text
    • http://wosesulejebus.epizy.com/gibbs_free_energy_problems_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/81342536163.pdfIn PDF document text
    • http://lesiterifok.epizy.com/bifaboniwosev.pdfIn PDF document text
    • http://doruxexim.epizy.com/wepimizubema.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/guidelines_for_larvae_therapy.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_off0000e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D4 5144 bytes
SHA-256: 2b7ddb83b70b1515de52b16159c42e3703e217e2236760c07ec516e36f7f8d84
font_01_sfnt_off0000f962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF962 10820 bytes
SHA-256: 63f8d93c77a637ad27447b47780fb0aaac66bf9d519f2872513fb16a56b53e66

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