Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b159ad3e36674f…

MALICIOUS

PDF

75.1 KB Created: 2021-03-22 08:44:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: babc3b19ca080ae75c2bc36f0c5eb6d8 SHA-1: 2746968b8d7bbad3cf726bad5b63be2a9972db40 SHA-256: f0b159ad3e36674ffd140f5e99c130bc8cf456f4db8d69216200a50ca3e90cee
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. The embedded URL `https://nipisod.ru/123?utm_term=aakasam+loni+chandamama+telugu+song` strongly suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate it's designed to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://nipisod.ru/123?utm_term=aakasam+loni+chandamama+telugu+song
    • https://static.s123-cdn-static.com/uploads/4457876/normal_5fcebf5b55df7.pdf
    • http://pokezokebawi.mygamesonline.org/ruvobasazujadozudutuner.pdf
    • http://sotipidikukunow.getenjoyment.net/ximir.pdf
    • http://salizurewaki.mypressonline.com/honda_hrc216_lawn_mower_price.pdf
    • http://sopisafexuj.sportsontheweb.net/definicion_de_anemia_ferropenica.pdf
    • http://kopuvimu.scienceontheweb.net/lonulowarukiwafej.pdf
    • http://wubowobipevoto.mywebcommunity.org/11357100439.pdf
    • http://lofajemami.sportsontheweb.net/norcold_rv_refrigerator_problems_solutions.pdf
    • http://nikibolerobika.getenjoyment.net/literary_analysis_essay_sample.pdf
    • http://jepenufi.getenjoyment.net/dnd_5e_best_campaigns_for_beginners.pdf
    • http://moxegelubopidi.sportsontheweb.net/blended_learning_journal.pdf
    • http://werikipirojenob.scienceontheweb.net/33908246782.pdf
    • https://static.s123-cdn-static.com/uploads/4426071/normal_5fefbe3138896.pdf
    • https://cdn-cms.f-static.net/uploads/4374848/normal_602a79891abb3.pdf
    • https://cdn-cms.f-static.net/uploads/4452206/normal_60555f9e57154.pdf
    • http://xonigej.mypressonline.com/mavabetilosimivexatugov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rijonitapadon.myartsonline.com/principales_funciones_del_jefe_de_recursos_humanos.pdf
    • http://kavezusi.onlinewebshop.net/android_reader_from_assets_folder.pdf
    • http://xakagigoneliv.myartsonline.com/23858548777.pdf
    • http://xunudijumo.myartsonline.com/80331695127.pdf
    • https://uploads.strikinglycdn.com/files/e310549e-078b-45a9-b46c-828ac3c24ace/53195006974.pdf
    • https://uploads.strikinglycdn.com/files/8920fb09-c238-4b7c-8766-c59bdb8d0071/bagofojilobajadejoju.pdf
    • https://uploads.strikinglycdn.com/files/5edbb499-d8f0-4b42-9c35-03e1a1b82cb0/fanowolerajijesoji.pdf
    • http://fojosotum.myartsonline.com/what_do_monat_reps_make.pdf
    • https://uploads.strikinglycdn.com/files/c15728e5-440a-4f4e-838b-e919da60fabc/22081081805.pdf
    • https://uploads.strikinglycdn.com/files/a00fccd9-4e85-40cc-9ced-a6c3e74169ea/pizutemibenesomoki.pdf
    • 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_off0000e775.bin
f750f595fe6f77e11ee4afbd399123242f3a7528eaefe904bd0f014493d46468		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE775 5308 bytes
font_01_sfnt_off0000f966.bin
97908ea30ffcebc874eb3e2e80d47469d9eeec81c4706d8c59feb40ea3b5761f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF966 11004 bytes

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