Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d38bfb0c958f55…

MALICIOUS

PDF

84.4 KB Created: 2021-03-19 11:46:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef38d145c29bc22c872db209e5d79d74 SHA-1: d12561f59a34ba298f5b8ac5b2ad5ed7768f00dd SHA-256: d7d38bfb0c958f55a5fb55ca78d0681743e9dbaf7287de0eb777089edef3b4bf
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains embedded URLs that lead to potentially malicious APK or PDF files, suggesting a phishing or malware distribution attempt. The document body mentions 'nba jam apk here', reinforcing the lure for downloading applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://resalured.ru/wix?keyword=nba+jam+apk+here
    • http://gosunenibunale.getenjoyment.net/tonefusijetadugaz.pdf
    • http://figimumagoko.mygamesonline.org/lejewenafuzageguned.pdf
    • https://cdn.sqhk.co/lemijexo/bjcigYa/owari_da_japanese.pdf
    • https://cdn.sqhk.co/norejasiwiza/ejhonhc/68436154210.pdf
    • http://puvepum.getenjoyment.net/36082197236.pdf
    • http://astrohelp.space/46220050755kxyoj.pdf
    • http://mapotilij.mygamesonline.org/examples_of_behavioral_interview_questions_for_managers.pdf
    • http://mavixepajifulem.scienceontheweb.net/technical_drawing_standards_iso.pdf
    • http://mutujejeturuduf.medianewsonline.com/how_to_read_bedtime_stories.pdf
    • http://xinuvaro.sportsontheweb.net/75729826924.pdf
    • https://cdn.sqhk.co/kenalexuvexu/hyhhNhf/mutufopefaruzixawa.pdf
    • http://konolux.medianewsonline.com/peporawuloj.pdf
    • http://lavka-karamel.ru/19087829781f1sxe.pdf
    • http://pirunumilusarib.sportsontheweb.net/libro_la_meta_resumen_por_capitulos.pdf
    • http://myfoxing.online/tuderizejojefozirevefovubbm9y9.pdf
    • http://otomail.business/how_to_find_poisson_probability_in_excelk2fxp.pdf
    • https://cdn.sqhk.co/sijiposago/CtINqhd/jacoco_xml_report_path.pdf
    • http://mynasert.online/5963766379wuvrw.pdf
    • https://cdn.sqhk.co/samumosoxivi/Vhj9Ibq/video_er_for_mac_10._7._5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://wifofevowogak.onlinewebshop.net/rglement_intrieur_de_l_assemble_nationale_du_sngal.pdf
    • http://faxevimisosideg.myartsonline.com/50097984776.pdf
    • http://futikuzita.onlinewebshop.net/40_rules_of_love.pdf
    • http://wugujub.onlinewebshop.net/bibezitamafa.pdf
    • http://tudugir.atwebpages.com/nexogud.pdf
    • https://s3.amazonaws.com/wobuzisibal/69868874315.pdf
    • https://s3.amazonaws.com/xidazeze/halloween_birthday_party_invitation_template.pdf
    • https://s3.amazonaws.com/juliziwojatige/nudulavafowemodibaseted.pdf
    • https://s3.amazonaws.com/firigugixujotov/swift_numberformatter_rounding.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcce.bin
85c67f238a923475fab1d03a60238934721ae615ecef7938f68a409cb49c888d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCE 5100 bytes
font_01_sfnt_off00010e02.bin
ea38696a59eba0e0416a8946f48a82256dee32a0e4123ab751df204561036db7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E02 13520 bytes
font_02_sfnt_off00013838.bin
3ee39bb5eee9c1899fd9750867d4cced2454ee4c082a3de128c8c14275047254		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13838 2836 bytes

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