Malicious PDF — malware analysis report

Static analysis result for SHA-256 a15455e998044162…

MALICIOUS

PDF

102.4 KB Created: 2021-03-19 05:52:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d3261cd7c76c8d534729e73385d92d4 SHA-1: 5929df6b77d76aec5a181b4837913a323027cb85 SHA-256: a15455e99804416223c1214e2c38124e9a3f527391e52c4cf1fc3627191c69d7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that masquerades as a search result, likely to trick the user into visiting a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/award?keyword=cebuano+to+tagalog+pdf
    • http://jidokove.scienceontheweb.net/52630279252.pdf
    • http://xaredazisom.mywebcommunity.org/blacks_law_dictionary_definition_of_citizen.pdf
    • http://rinusiwujegabu.medianewsonline.com/45925473959.pdf
    • https://nipawivas.weebly.com/uploads/1/3/2/6/132680981/milawuto_lenivobuf_mazupomom.pdf
    • http://vozivovog.scienceontheweb.net/does_tracfone_have_a_speaker.pdf
    • https://venunuwaxel.weebly.com/uploads/1/3/2/7/132740799/f2c2601ec8.pdf
    • http://lilubaxubaxulu.sportsontheweb.net/what_is_function_and_relation_in_real_life_situation.pdf
    • http://sekujirimabasas.getenjoyment.net/53978888701.pdf
    • http://zumewidife.mygamesonline.org/how_to_take_apart_a_keurig_2.0.pdf
    • https://vizifota.weebly.com/uploads/1/3/0/9/130969876/rilasurupawewa_timelugadenote_luvowewipomum.pdf
    • http://mojofaza.mypressonline.com/tefubezakulawozova.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://famekuputoda.myartsonline.com/zawenukasawijasu.pdf
    • https://uploads.strikinglycdn.com/files/7ee10fda-9a5d-48e1-91ac-5d93174701da/hoover_windtunnel_central_vacuum_parts.pdf
    • https://s3.amazonaws.com/zufaxepixiguxax/ck2_alexander_bloodline_guide.pdf
    • https://uploads.strikinglycdn.com/files/798aa8b8-0ccf-4350-beac-3c33e7b25b5a/eisenhorn_omnibus_hardcover.pdf
    • https://s3.amazonaws.com/zopenave/panasonic_rice_cooker_5_cup.pdf
    • https://uploads.strikinglycdn.com/files/88760f35-d100-4487-a976-b82a1f9103f2/92461905282.pdf
    • http://baxewape.myartsonline.com/gupegel.pdf
    • https://s3.amazonaws.com/lerezazo/8175503814.pdf
    • https://s3.amazonaws.com/xedewofuretujo/63345537007.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000138bd.bin
f39792ea6e8c69a851f13d5d9f055893ca3e8155f6516081b36c752aa9c50acf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x138BD 4980 bytes
font_01_sfnt_off000149be.bin
89f4a2003634341c5329f0f01509fa6f030c50e71527c9079dfb16199e43fc91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149BE 14848 bytes
font_02_sfnt_off00017717.bin
6fffb1aeb89666cbcaec4ce24454e19e9ad5757041bd2745d7057949fb60916b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17717 16116 bytes

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