Malicious PDF — malware analysis report

Static analysis result for SHA-256 4922fe52d4c316b9…

MALICIOUS

PDF

91.4 KB Created: 2021-03-24 08:32:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a6b8d533a0a6a0e809fbb446c0c56f1e SHA-1: 2f0dbe68bcf69a3f3f71f9a1f7b00b8476c54c1b SHA-256: 4922fe52d4c316b95efe1e8ae9ce9d2f015b532738b2500fd760db6c5b7bc2b7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, disguised as a search result for a popular game. This suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to direct the user to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/wix?keyword=blade+and+soul+summoner+pve+build PDF link annotation
    • http://proita.fun/find_google_history_on_androidwpj58.pdfIn PDF document text
    • http://prechambre.xyz/xodixolebifejotefcqwqv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389606/normal_5fcc840050705.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473359/normal_6033abc13fb49.pdfIn PDF document text
    • http://fosonelotila.medianewsonline.com/sozubafuwexumowuxos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5feb4ef9a3205.pdfIn PDF document text
    • http://mumopajikex.mygamesonline.org/accounting_ledger_format.pdfIn PDF document text
    • http://kowezuzapine.66ghz.com/21887508275.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_6057b373c941b.pdfIn PDF document text
    • http://dsv-trening.ru/action_game_recorder_cracklri46.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/fusebofezesijunori.pdfIn PDF document text
    • http://xawaliduza.iblogger.org/bexeborisivuxalaku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5fdbd3007ee41.pdfIn PDF document text
    • http://tilosag.mypressonline.com/today_dinamalar_tamil_news_paper_free_download.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/salade/husqvarna_chainsaw_455_rancher_chain_sprocket.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/mesa_boogie_dual_rectifier_tube_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/putesefigisadavemufijem.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/kolkata_new_movie_2018.pdfIn PDF document text
    • http://poxatita.epizy.com/battlefront_2_inferno_squad.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/58355058126.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/93635538340.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/wozowozifozizesipabusexi.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/app_tweaks_minecraft_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/cindy_alma_sad_song.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_off00011b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B90 5352 bytes
SHA-256: cd53093faecf99e0e45655e357e6afa9841847cf73129f895d66713026df67a6
font_01_sfnt_off00012dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAC 22368 bytes
SHA-256: 4edebe870e525b3bc63196f57e43fc20b4410d724afcf24aac09a768924b61ff

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